By three methods we may learn wisdom: first, by reflection which is noblest; second, by imitation, which is the easiest; and third, by experience, which is the bitterest.
Never do anything when you are in a temper, for you will do everything wrong.
Each problem that I solved became a rule which served afterwards to solve other problems.
So many people have this idea: I want to achieve something great or be somebody great. And they neglect the step that leads to greatness. They don't honor this step at this moment because they have this idea of some future moment where they are going to be great.
Never pick a fight with an ugly person, they've got nothing to lose.
A person reveals his character by nothing so clearly as the joke he resents.
There is no question climate change is happening. The only arguable point is what part humans are playing in it.
It is not enough to have a good mind; the main thing is to use it well.
If I speak of myself in different ways, that is because I look at myself in different ways.
Confidence is contagious. So is lack of confidence.
Yesterday I was clever, so I wanted to change the world. Today I am wise, so I am changing myself.
It is not titles that honor men, but men that honor titles.
When you dance, your purpose is not to get to a certain place on the floor. It's to enjoy each step along the way.
And no one will listen to us until we listen to ourselves.
Blessed are they who hunger and thirst for righteousness for they shall be satisfied.
There are four ways, and only four ways, in which we have contact with the world. We are evaluated and classified by these four contacts: what we do, how we look, what we say, and how we say it.
We must live together as brothers or perish together as fools.
It takes a great man to be a good listener.
Moderation in temper is always a virtue; but moderation in principle is always a vice.
Talent is God given. Be humble. Fame is man-given. Be grateful. Conceit is self-given. Be careful.
Great dreams of great dreamers are always transcended.