The world is the great gymnasium where we come to make ourselves strong.

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

If I find 10,000 ways something won't work, I haven't failed. I am not discouraged, because every wrong attempt discarded is another step forward.

Alone we can do so little; together we can do so much.

Waiting hurts. Forgetting hurts. But not knowing which decision to take is the worst of suffering

When you're curious, you find lots of interesting things to do.

Only when I fall do I get up again.

However many holy words you read, however many you speak, what good will they do you if you do not act on upon them?

I'm sorry I wrote you such a long letter; I didn't have time to write a short one.

I don’t think we are going to become extinct. We are very clever and very resourceful.

All wealth is the product of labor.

Take things as they are. Punch when you have to punch. Kick when you have to kick.

Don't fear failure. Not failure, but low aim, is the crime. In great attempts it is glorious even to fail.

A superior man is modest in his speech, but exceeds in his actions.

The crisis of today is the joke of tomorrow.

I can never stand still. I must explore and experiment. I am never satisfied with my work. I resent the limitations of my own imagination.

There is a candle in your heart, ready to be kindled. There is a void in your soul, ready to be filled. You feel it, don’t you?

The secret of genius is to carry the spirit of the child into old age, which means never losing your enthusiasm.

Work gives you meaning and purpose and life is empty without it.

The past cannot be changed. The future is yet in your power.

Things may come to those who wait but only the things left by those who hustle.