“The Essence of Knowledge is, having it, to use it.”

“The essence of darkness is the knowledge of what blocks the light.”

“Wisdom is the right use of knowledge. To know is not to be wise. Many men know a great deal, and are all the greater fools for it. There is no fool so great a fool as a knowing fool. But to know how to use knowledge is to have wisdom.”

“[T]he essence of belief is doubt, the essence of reality is questioning. The essence of Time is Flow, not Fix. The essence of faith is the knowledge that all flows and that everything must change. The growing man is Man Alive, and his "philosophy" must grow, must flow, with him. . . . the man too fixed today, unfixed tomorrow - and his body of beliefs is nothing but a series of fixations.”

“The true essence of humankind is kindness. There are other qualities which come from education or knowledge, but it is essential, if one wishes to be a genuine human being and impart satisfying meaning to one's existence, to have a good heart.”

“Knowledge is power? No. Knowledge on its own is nothing, but the application of useful knowledge, now that is powerful.”