Friendship often ends in love, but love in friendship - never.

A harmless hilarity and a buoyant cheerfulness are not infrequent concomitants of genius; and we are never more deceived than when we mistake gravity for greatness, solemnity for science, and pomposity for erudition.

The greatest friend of truth is Time, her greatest enemy is Prejudice, and her constant companion is Humility.

He that studies books alone, will know how things ought to be; and he that studies men, will know how things are.

He that can enjoy the intimacy of the great, and on no occasion disgust them by familiarity, or disgrace himself by servility, proves that he is as perfect a gentleman by nature as his companions are by rank.

When the air balloon was first discovered, some one flippantly asked Dr. Franklin what was the use of it. The doctor answered this question by asking another: "What is the use of a new-born infant? It may become a man."

Theories are private property, but truth is common stock.