Gratitude is an illness suffered by dogs.

The way to become rich is to put all your eggs in one basket and then watch that basket.

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

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

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

We should not give up and we should not allow the problem to defeat us.

People should pursue what they're passionate about. That will make them happier than pretty much anything else.

Know thyself.

It's not what you look at that matters, it's what you see.

If you can't fly then run, if you can't run then walk, if you can't walk then crawl, but whatever you do you have to keep moving forward.

You can't learn in school what the world is going to do next year.

If you want creative workers, give them enough time to play.

Yesterday is gone. Tomorrow has not yet come. We have only today. Let us begin.

Human dignity consists in the role we must play in our own perfection. Taking a role in our own self-completion is the highest expression of our creativity.

All wealth is the product of labor.

I discover myself on the verge of a usual mistake.

Anything that makes weak - physically, intellectually and spiritually, reject it as poison.

Employ your time in improving yourself by other men's writings so that you shall come easily by what others have labored hard for.

Our patience will achieve more than our force.

It's always too early to quit.

The superior man thinks only of virtue; the common man thinks only of comfort.