The fool doth think he is wise, yet it is the wise man that knows himself to be the fool As You Like It, Act 5, Scene 1

No Man is so much a Fool as not to have Wit enough sometimes to be a Knave ; nor any so cunning a Knave, as not to have the Weakness sometimes to play the Fool.

A wise man can play the fool, but the fool can never play wise.

The wise man through an excess of wisdom is made a fool.

The fool doth think he is wise, but the wise man knows himself to be a fool.

The fool doth think he is wise, but the wise man knows himself to be a fool.

the wise may be instructed by a fool

If it was not for the company of fools, a witty man would often be greatly at a loss.

If any man among you seemeth to be wise in this world, let him become a fool, that he may be wise.

The fool wonders, the wise man asks.

The wise through excess of wisdom is made a fool.

The fool who persists in his folly will become wise.

The Wise do at once what the Fool does at last. Both do the same thing; the only difference lies in the time they do it: the one at the right time, the other at the wrong. Who starts out with his mind topsyturvy will so continue till the end. He catches by the foot what he ought to knock on the head, he turns right into left, and in all his acts is but a child. There is only one way to get him in the right way, and that is to force him to do what he might have done of his own accord. The wise man, on the other hand, sees at once what must be done sooner

If the fool would persist in his folly he would become wise