A man is great by deeds, not by birth.

People fall forward to success.

A question that sometimes drives me hazy: Am I, or the others, crazy?

I despise people who depend on these things [heroin and cocaine]. If you really want a mind-altering experience, look at a tree.

I can calculate the motion of heavenly bodies but not the madness of people.

The whole universe is contained within a single human being – you.

We may have different religions, different languages, different colored skin, but we all belong to one human race.

People demand freedom of speech as a compensation for the freedom of thought which they seldom use.

Great minds discuss ideas. Average minds discuss events. Small minds discuss people.

Some people seem to fade away but then when they are truly gone, it's like they didn't fade away at all.

It’s extraordinary how self-obsessed human beings are. There is so much more out there than what connects to us.

The true measure of a man is how he treats someone who can do him absolutely no good.

One can choose to go back toward safety or forward toward growth. Growth must be chosen again and again; fear must be overcome again and again.

To live alone is the fate of all great souls.

Our true nationality is mankind.

Everything that irritates us about others can lead us to an understanding of ourselves.

Outstanding people have one thing in common: an absolute sense of mission

The greatest sweetener of human life is Friendship. To raise this to the highest pitch of enjoyment, is a secret which but few discover.

Example is not the main thing in influencing others. It is the only thing.

Private passions tire and exhaust themselves, public ones never.

Man has the power to act as his own destroyer - and that is the way he has acted through most of his history.