You must never be fearful about what you are doing when it is right.

Do not let it be your aim to be something, but to be someone.

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

Never look back unless you are planning to go that way.

Don't ever take a fence down until you know why it was put up.

The expectations of life depend upon diligence; the mechanic that would perfect his work must first sharpen his tools.

The duty of youth is to challenge corruption.

Neither seek nor avoid, take what comes.

I believe that if you show people the problems and you show them the solutions they will be moved to act.

Be miserable. Or motivate yourself. Whatever has to be done, it's always your choice.

When all is said and done, more is said than done.

Don't get set into one form, adapt it and build your own, and let it grow, be like water.

All the darkness in the world cannot extinguish the light of a single candle.

Memories of our lives, of our works and our deeds will continue in others.

A goal is not always meant to be reached, it often serves simply as something to aim at.

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

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.

If you think in terms of a year, plant a seed; if in terms of ten years, plant trees; if in terms of 100 years, teach the people.

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

We are all motivated by a keen desire for praise, and the better a man is, the more he is inspired by glory.

Only in the darkness, you are able to see the stars.