The seen is the changing, the unseen is the unchanging.

Follow your dream as long as you live, do not lessen the time of following desire, for wasting time is an abomination of the spirit.

Everything changes and nothing remains still.

How well I remember the aged poet Sophocles, when in answer to the question, "How does love suit with age, Sophocles - are you still the man you were?" he replied, "Peace, most gladly have I escaped the thing of which you speak; I feel as if I had escaped from a mad and furious master."

[The Cretans have] more wit than words.

God ever geometrizes.

It is through geometry that one purifies the eye of the soul.