There is only one corner of the universe you can be certain of improving, and that's your own self.

Don't find fault, find a remedy; anybody can complain

In essence, if we want to direct our lives, we must take control of our consistent actions. It's not what we do once in a while that shapes our lives, but what we do consistently.

People don't realize how a man's whole life can be changed by one book.

He was a dreamer, a thinker, a speculative philosopher... or, as his wife would have it, an idiot.

I don't care what people think or say about me, I know who I am.

I hope our wisdom will grow with our power, and teach us that the less we use our power the greater it will be.

When obstacles arise, you change your direction to reach your goal; you do not change your decision to get there.

There is no refuge from confession but suicide; and suicide is confession.

Learn from yesterday, live for today, hope for tomorrow.

A bird doesn't sing because it has an answer, it sings because it has a song.

Courage is the most important of all the virtues, because without courage you can't practice any other virtue consistently. You can practice any virtue erratically, but nothing consistently without courage.

Self-confidence is the first requisite to great undertakings.

Do not count your chickens before they are hatched.

I long to accomplish a great and noble task; but it is my chief duty to accomplish small tasks as if they were great and noble

If you can't feed a hundred people, then just feed one.

I'd rather be hated for who I am, than loved for who I am not.

Freedom from the desire for an answer is essential to the understanding of a problem.

Strength of mind rests in sobriety; for this keeps your reason unclouded by passion.

The man with no imagination has no wings.

It marks a big step in your development when you come to realize that other people can help you do a better job than you could do alone.