When every physical and mental resource is focused, one's power to solve a problem multiplies tremendously.

No matter what people tell you, words and ideas can change the world.

Great work requires great and persistent effort for a long time. … Character has to be established through a thousand stumbles.

I don't know who my grandfather was; I'm much more concerned to know what his grandson will be.

My heroes are the ones who survived doing it wrong, who made mistakes, but recovered from them.

We delight in the beauty of the butterfly, but rarely admit the changes it has gone through to achieve that beauty.

Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young.

I'm not telling you it's going to be easy - I'm telling you it's going to be worth it.

There are no traffic jams on the extra mile.

Your success and happiness lies in you. Resolve to keep happy, and your joy and you shall form an invincible host against difficulties.

The duty of youth is to challenge corruption.

Life is like riding a bicycle. To keep your balance, you must keep moving.

For every man there exists a bait which he cannot resist swallowing.

If my life is going to mean anything, I have to live it myself.

You can wish for things in the future to be different, but in this moment you have to accept things as they are.

Sincerity and truth are the basis of every virtue.

One of the things I learned when I was negotiating was that until I changed myself, I could not change others.

I invented my life by taking for granted that everything I did not like would have an opposite, which I would like.

There is nothing in a caterpillar that tells you it's going to be a butterfly.

You can't live a perfect day until you do something for someone who will never be able to repay you.

It is greed to do all the talking but not to want to listen at all.