Each particle of matter is an immensity, each leaf a world, each insect an inexplicable compendium.

No communication or gift can exhaust genius or impoverish charity.

Mistrust the man who finds everything good, the man who finds everything evil and still more the man who is indifferent to everything.

Have I done aught of value to my fellow-men? Then have I done much for myself.

Borrowed wit is the poorest wit.

What do I owe to my times, to my country, to my neighbors, to my friends? Such are the questions which a virtuous man ought often to ask himself.

Intuition is the clear conception of the whole at once.