Wisdom and knowledge decrease in inverse proportion to age.

A man may know everything, but he will never understand it all.

Knowledge is the wing whereby we fly to Heaven.

The art of being wise is the art of knowing what to overlook.

He that has more knowledge than judgement, is made for another man's use more than his own.

Have you ever considered what anxious thought, what consummate knowledge of human nature, what dearly-bought experiences go into the making of an advertisement?