There are only two ways by which to rise in this world, either by one's own industry or by the stupidity of others.

As long as men are liable to die and are desirous to live, a physician will be made fun of, but he will be well paid.

A man may have intelligence enough to excel in a particular thing and lecture on it, and yet not have sense enough to know he ought to be silent on some other subject of which he has but a slight knowledge; if such an illustrious man ventures beyond the bounds of his capacity, he loses his way and talks like a fool.

No road is to long for him who advances slowly and does not hurry and no attainment is beyond his reach who equips himself with patience to achieve it

Such a great misfortune, not to be able to be alone.

There are certain things in which mediocrity is not to be endured, such as poetry, music, painting, public speaking.

The slave has but one master, the ambitious man has as many as there are persons whose aid may contribute to the advancement of his fortunes.