“This religion so great in miracles, in men holy, pure and irreproachable, in scholars, great witnesses and martyrs, established kings - David - Isaiah, a prince of the blood; so great in knowledge, after displaying all its miracles and all its wisdom, rejects it all and says that it offers neither wisdom nor signs, but only the Cross and folly.”

“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.”

“A philosopher is a lover of wisdom, not of knowledge, which for all its great uses ultimately suffers from the crippling effect of ephemerality. All knowledge is transient linked to the world around it and subject to change as the world changes, whereas wisdom, true wisdom is eternal immutable. To be philosophical one must love wisdom for its own sake, accept its permanent validity and yet its perpetual irrelevance. It is the fate of the wise to understand the process of history and yet never to shape it.”

“Trepidation is either the sign of great weakness or great wisdom.”

“You have a great heart, but will only find it to be so through great pain. This is the wisdom of love, and its doubtful gift. . . . I have endured much suffering and still remain unbitter and unclosed.”

“If you seem to be happy in this place of solitude, you will acquire a great reputation for wisdom, and I know, by my own experience, that under the cloak of a great reputation it is possible to hide whole treasures of folly. (“The Story of Princess Zulkais and the Prince Kalilah”)”