“Men exist for the sake of one another.”

Everything that exists is in a manner the seed of that which will be.

Whatever anyone does or says, I must be emerald and keep my colour.

Very little is needed to make a happy life; it is all within yourself in your way of thinking.

The memory of everything is very soon overwhelmed in time.

The impediment to action advances action. What stands in the way becomes the way.

Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.

The best revenge is to be unlike him who performed the injury.

You always own the option of having no opinion.

Look well into thyself; there is a source of strength which will always spring up if thou wilt always look.

Do not act as if you were going to live ten thousand years. Death hangs over you. While you live, while it is in your power, be good.

A man must stand erect, not be kept erect by others.

It never ceases to amaze me: we all love ourselves more than other people, but care more about their opinion than our own.

Our life is what our thoughts make it.

How ridiculous and how strange to be surprised at anything which happens in life.

Remember that very little is needed to make a happy life.

Just that you do the right thing. The rest doesn’t matter. Cold or warm.

As a Christian, I have no duty to allow myself to be cheated, but I have the duty to be a fighter for truth and justice.

In my view, aiming at simplicity and lucidity is a moral duty of all intellectuals: lack of clarity is a sin, and pretentiousness is a crime.

Voting is the most powerful right of every citizen and it is our duty to exercise our vote.

For it is the duty of an astronomer to compose the history of the celestial motions through careful and expert study.

Do your duty and a little more and the future will take care of itself.

Everyone has to have a sense of duty. A duty to society, to their family. I mean, you name it.

It is our duty to fight for our freedom. It is our duty to win. We must love each other and support each other. We have nothing to lose but our chains.

The first duty of a revolutionary is to be educated.