Sleep not when others speak, sit not when others stand, speak not when you should hold your peace, walk not when others stop.

Let your countenance be pleasant, but in serious matters let it be somewhat grave.

To understand the man you have to know what was happening in the world when he was twenty.

External nature is only internal nature writ large.

A man's character may be learned from the adjectives which he habitually uses in conversation.

The satisfaction arising from the indulgent opinion entertained by the American People of my conduct, will, I trust, be some security for preventing me from doing any thing, which might justly incur the forfeiture of that opinion. And the consideration that human happiness and moral duty are inseparably connected, will always continue to prompt me to promote the progress of the former, by inculcating the practice of the latter.