For desire is a flame that has reduced to ashes uncounted lifetime harvests of the learned, a devouring fire that even the vast sea of their accumulated knowledge could never quench. How often has it happened that an individual who was graced with every attribute of humanity and wore the jewel of true understanding, nevertheless followed after his passions until his excellent qualities passed beyond moderation and he was forced into excess. His pure intentions changed to evil ones, his attributes were no longer put to uses worthy of them, and the power of his desires turned him aside from righteousness and its rewards into ways that were dangerous and dark. A good character is in the sight of God and His chosen ones and the possessors of insight, the most excellent and praiseworthy of all things, but always on condition that its centre of emanation should be reason and knowledge and its base should be true moderation....
- ‘Abdu’l-Baha (‘The Secret of Divine Civilization’; Compilation of Compilations, vol. I, A Chase and Holy Life)
