One whose knowledge is confined to books and whose wealth is in the possession of others, can use neither his knowledge nor wealth when the need for them arises.

Once and for all, there are many things I choose not to know.-Wisdom sets limits even to knowledge.

The man of knowledge must be able not only to love his enemies but also to hate his friends.

It is not enough to prove something, one also has to seduce or elevate people to it. That is why the man of knowledge should learn how to speak his wisdom: and often in such a way that it sounds like folly!

Our treasure lies in the beehive of our knowledge. We are perpetually on the way thither, being by nature winged insects and honey gatherers of the mind.

Where there is shouting, there is no true knowledge.