“every fixed star has its planets, and every planet its own creatures”

As you rightly state, Bahá'u'll'áh affirms that every fixed star has its planets, and every planet its own creatures. The House of Justice states however, that it has not discovered anything in the Bahá'í Writings which would indicate the degree of progress such creatures may have attained. Obviously, as creatures of earth have managed to construct space probes and send them into outer space, it can be believed that creatures on other planets may have succeeded in doing likewise. 

- The Universal House of Justice  (From a letter dated 11 January 1982 written on behalf of the Universal House of Justice to an individual believer; included in a Memorandum from the Research Department of the Universal House of Justice dated 6 August 1996)

To “spiritualize the community of man”

O peoples of the world! The Sun of Truth hath risen to illumine the whole earth, and to spiritualize the community of man. Laudable are the results and the fruits thereof, abundant the holy evidences deriving from this grace. This is mercy unalloyed and purest bounty; it is light for the world and all its peoples; it is harmony and fellowship, and love and solidarity; indeed it is compassion and unity, and the end of foreignness; it is the being at one, in complete dignity and freedom, with all on earth. 

- ‘Abdu’l-Baha  (Selections from the Writings of ‘Abdu’l-Baha)

The “unshakable supports of the Faith of God”

There are certain pillars which have been established as the unshakable supports of the Faith of God. The mightiest of these is learning and the use of the mind, the expansion of consciousness, and insight into the realities of the universe and the hidden mysteries of Almighty God. 

- ‘Abdu’l-Baha  (‘Selections from the Writings of 'Abdu'l-Bahá’; The Compilation of Compilations, vol. I, Baha’i Education)

“the century of light -- has been endowed with unique and unprecedented glory, power and illumination”

In cycles gone by, though harmony was established, yet, owing to the absence of means, the unity of all mankind could not have been achieved. Continents remained widely divided, nay even among the peoples of one and the same continent association and interchange of thought were well-nigh impossible. Consequently intercourse, understanding and unity amongst all the peoples and kindreds of the earth were unattainable. In this day, however, means of communication have multiplied, and the five continents of the earth have virtually merged into one.... In like manner all the members of the human family, whether peoples or governments, cities or villages, have become increasingly interdependent. For none is self-sufficiency any longer possible, inasmuch as political ties unite all peoples and nations, and the bonds of trade and industry, of agriculture and education, are being strengthened every day. Hence the unity of all mankind can in this day be achieved. Verily this is none other but one of the wonders of this wondrous age, this glorious century. Of this past ages have been deprived, for this century -- the century of light -- has been endowed with unique and unprecedented glory, power and illumination. Hence the miraculous unfolding of a fresh marvel every day. Eventually it will be seen how bright its candles will burn in the assemblage of man. 

- ‘Abdu’l-Baha  (Cited in Shoghi Effendi, ‘The World Order of Bahá'u'lláh’, and ‘The Promised Day Is Come’; The Compilation of Compilations, Vol. II, Peace)

“A pure heart is as a mirror”

O My brother! A pure heart is as a mirror; cleanse it with the burnish of love and severance from all save God, that the true sun may shine therein and the eternal morning dawn. Then wilt thou clearly see the meaning of “Earth and heaven cannot contain Me; what can alone contain Me is the heart of him that believeth in Me.”[1] And thou wilt take up thy life in thy hand and with infinite longing cast it before thy newly found Beloved. 

- Baha’u’llah’  (‘The Seven Valleys’, 2019 revised translation by the Baha’i World Centre; ‘The Call of the Divine Beloved’)

[1] From a Hadíth

“One soul can be the cause of the spiritual illumination of a continent.”

You must not make the great mistake of judging our Faith by one community which obviously needs to study and obey the Bahá'í teachings. Human frailties and peculiarities can be a great test. But the only way, or perhaps I should say the first and best way, to remedy such situations, is to oneself do what is right. One soul can be the cause of the spiritual illumination of a continent. Now that you have seen, and remedied, a great fault in your life, now that you see more clearly what is lacking in your own community, there is nothing to prevent you from arising and showing such an example, such a love and spirit of service, as to enkindle the hearts of your fellow Bahá'ís.

He urges you to study deeply the teachings, teach others, study with those Bahá'ís who are anxious to do so, the deeper teachings of our Faith, and through example, effort and prayer, bring about a change. 

- Shoghi Effendi  (From a letter dated 30 September 1949 written on behalf of Shoghi Effendi to an individual believer; The Compilation of Compilations, vol. I, The Importance of Deepening Our Knowledge and Understanding of the Faith)

Going through life we must look: “what we have made of our souls” – “becoming more spiritual, drawing nearer to God”

...as we suffer these misfortunes we must remember that the Prophets of God Themselves were not immune from these things which men suffer. They knew sorrow, illness and pain too. They rose above these things through Their spirits, and that is what we must try and do too, when afflicted. The troubles of this world pass, and what we have left is what we have made of our souls; so it is to this we must look--to becoming more spiritual, drawing nearer to God, no matter what our human minds and bodies go through. 

- Shoghi Effendi  (From a letter dated 5 August 1949 written on behalf of Shoghi Effendi to an individual believer; The Compilation of Compilations, vol. II, Living the Life)

“a woman's great contribution to home life”

Your responsibility towards your son and your husband is very great, and the Guardian hopes your work will soon reach a point where you can return, at least for sometime, to them, and give them that love and encouragement which is a woman's great contribution to home life. 

- Shoghi Effendi  (From a letter written on behalf of Shoghi Effendi, 5 August 1949 to an individual believer; The Compilation of Compilations, Vol. I, Family Life)

Need to attract the “thinking world” to the deeper teachings of Baha’u’llah

It seems what we need now is a more profound and coordinated Bahá'í scholarship in order to attract such men as you are contacting. The world has -- at least the thinking world -- caught up by now with all the great and universal principles enunciated by Bahá'u'lláh over 70 years ago, and so of course it does not sound "new" to them. But we know that the deeper teachings, the capacity of His projected World Order to re-create society, are new and dynamic. It is these we must learn to present intelligently and enticingly to such men! 

- Shoghi Effendi  (From a letter dated 3 July 1949 written on behalf of Shoghi Effendi; The Compilation of Compilations, vol. II, Teaching Prominent People)

The “best way” we “can serve the interests of humanity and hasten the day when at least the Lesser Peace will become a reality”

He cannot urge upon you all sufficiently, and through you the believers, the importance of Bahá'ís realizing that direct, concentrated, and efficiently carried out Bahá'í work is not only their supreme duty but the best way they can serve the interests of humanity and hasten the day when at least the Lesser Peace will become a reality. We must always bear in mind that Bahá'u'lláh's Order is the sovereign remedy, and all other measures, inaugurated by the United Nations or various governments, are in the nature of palliatives, however sound and progressive they may be. We must concentrate on perfecting our characters as individual Bahá'ís and on maturing our still embryonic, and as yet imperfectly understood, World Order; on spreading the Message, according to the provisions of the Divine Plan; and on building a tightly-knit, world-wide Bahá'í community. We are relatively few in numbers, and have such a precious, unique, and responsible task to carry out, we must concentrate our full forces upon it. 

- Shoghi Effendi  (From a letter written on behalf of Shoghi Effendi, Baha’i News 197, July, 1947; ‘Principles of Bahai Administration’)

Participating in peaceful rallies

There can be no question then that Bahá’ís are committed to efforts toward social transformation. “Much as the friends must guard against in any way ever seeming to identify themselves or the Cause with any political party,” Shoghi Effendi, through his secretary, cautioned, “they must also guard against the other extreme of never taking part, with other progressive groups, in conferences or committees designed to promote some activity in entire accord with our teachings—such as, for instance, better race relations.” This involvement in activities for social reform and well-being can in certain circumstances even extend to taking part in demonstrations. A letter written on the Guardian’s behalf indicated that he did not see any objection to Bahá’í students taking part as Bahá’ís in a protest concerning racial prejudice on campus, since “there was nothing political about it” and “he does not see how they could remain indifferent when fellow-students were voicing our own Bahá’í attitude on such a vital issue and one we feel so strongly about.” Thus, individual Bahá’ís are free to participate in those efforts and activities, such as peaceful rallies, that uphold constructive aims in consonance with the Bahá’í teachings, for example, the advancement of women, the promotion of social justice, the protection of the environment, the elimination of all forms of discrimination, and the safeguarding of human rights.

The “form” of the human soul

When the soul attaineth the Presence of God, it will assume the form that best befitteth its immortality and is worthy of its celestial habitation. Such an existence is a contingent and not an absolute existence, inasmuch as the former is preceded by a cause, whilst the latter is independent thereof. Absolute existence is strictly confined to God, exalted be His glory. 

- Baha'u'llah  ('Gleanings from the Writings of Baha'u'llah')

The “stronghold of the Faith of every Bahá'í”: - “the Covenants of both Bahá'u'lláh and `Abdu'l-Bahá”

...the believers need to be deepened in their knowledge and appreciation of the Covenants of both Bahá'u'lláh and `Abdu'l-Bahá. This is the stronghold of the Faith of every Bahá'í, and that which enables him to withstand every test and the attacks of the enemies outside the Faith, and the far more dangerous, insidious, lukewarm people inside the Faith who have no real attachment to the Covenant, and consequently uphold the intellectual aspect of the teachings while at the same time undermining the spiritual foundation upon which the whole Cause of God rests. 

- Shoghi Effendi  (From a letter written on behalf of Shoghi Effendi, 15 April 1949 to an individual believer, published in "The Light of Divine Guidance", vol. 2; The Compilation of Compilations, vol. 1, Crisis and Victory) 

“every soul is fashioned after the nature of God, each being pure and holy at his birth”

Know thou that every soul is fashioned after the nature of God, each being pure and holy at his birth. Afterwards, however, the individuals will vary according to what they acquire of virtues or vices in this world. Although all existent beings are in their very nature created in ranks or degrees, for capacities are various, nevertheless every individual is born holy and pure, and only thereafter may he become defiled.

And further, although the degrees of being are various, yet all are good. Observe the human body, its limbs, its members, the eye, the ear, the organs of smell, of taste, the hands, the fingernails. Notwithstanding the differences among all these parts, each one within the limitations of its own being participateth in a coherent whole. If one of them faileth it must be healed, and should no remedy avail, that part must be removed. 

- ‘Abdu'l-Baha  ('Selections from the Writings of ‘Abdu'l-Baha')

“Whoso quickeneth but a single soul in this Revelation, it is as though he had quickened all humanity”

Say: None shall be immune in this Day from God’s decree; none shall find refuge save in Him. This, verily, is the truth, and aught else is but manifest error. God hath made it incumbent upon all to teach His Cause to the extent of their ability. Such is the decree that the Finger of might and power hath recorded in the Tablets of supernal glory. Whoso quickeneth but a single soul in this Revelation, it is as though he had quickened all humanity: Him will God, on the Day of Resurrection, raise again to life in the paradise of His oneness, adorned with the raiment of His own Self, the Sovereign Protector, the Almighty, the All-Bountiful. Such is the nature of the assistance ye can render to your Lord, and naught else is worthy of mention in this Day in the presence of God, your Lord and the Lord of your sires of old. 

- Baha’u’llah  (‘Tablet of the Branch’; ‘Days of Remembrance’)