Never part without loving words to think of during your absence. It may be that you will not meet again in life.
You need only reflect that one of the best ways to get yourself a reputation as a dangerous citizen these days is to go about repeating the very phrases which our founding fathers used in the struggle for independence.
I never know how much of what I say is true.
Wit makes its own welcome, and levels all distinctions. No dignity, no learning, no force of character, can make any stand against good wit.
To avoid situations in which you might make mistakes may be the biggest mistake of all.
There is a tragic flaw in our precious Constitution, and I don't know what can be done to fix it. This is it: Only nut cases want to be president.
The secret of greatness is simple: do better work than any other man in your field - and keep on doing it.