As to the existence of spirit in the mineral: it is indubitable that minerals are endowed with a spirit and life according to the requirements of that stage. This unknown secret, too, hath become known unto the materialists who now maintain that all beings are endowed with life, even as He saith in the Qur’án, ‘All things are living’.
In the vegetable world, too, there is the power of growth, and that power of growth is the spirit.
- ‘Abdu’l-Baha (‘Tablet to August Forel)
