«Wisdom and folly»

There is a difference between happiness and wisdom: he that thinks himself the happiest man is really so; but he that thinks himself the wisest is generally the greatest fool.

Francis Bacon

If I am fool, it is, at least, a doubting one; and I envy no one the certainty of his self-approved wisdom.

Lord Byron

In seeking wisdom thou art wise; in imagining that thou hast attained it - thou art a fool.

Philip Stanhope, 4th Earl of Chesterfield

Love is the wisdom of the fool and the folly of the wise.

Samuel Johnson

The greatest obstacle to being heroic is the doubt whether one may not be going to prove one’s self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.

Nathaniel Hawthorne

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.

Charles Spurgeon

True wisdom is less presuming than folly. The wise man doubteth often, and changeth his mind; the fool is obstinate, and doubteth not; he knoweth all things but his own ignorance.

Akhenaton