A static hero is a public liability. Progress grows out of motion.

It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood, who strives valiantly; who errs and comes short again and again; because there is not effort without error and shortcomings; but who does actually strive to do the deed; who knows the great enthusiasm, the great devotion, who spends himself in a worthy cause, who at the best knows in the end the triumph of high achievement and who at the worst, if he fails, at least he fails while daring greatly. So that his place shall never be with those cold and timid souls who know neither victory nor defeat.

Young love is a flame; very pretty, often very hot and fierce, but still only light and flickering. The love of the older and disciplined heart is as coals, deep burning, unquenchable.

Without accepting the fact that everything changes, we cannot find perfect composure. But unfortunately, although it is true, it is difficult for us to accept it. Because we cannot accept the truth of transience, we suffer.

Why not seize the pleasure at once, how often is happiness destroyed by preparation, foolish preparations.

Many persons have a wrong idea of what constitutes true happiness. It is not attained through self-gratification but through fidelity to a worthy purpose.

I wanted to change the world. But I have found that the only thing one can be sure of changing is oneself.

Oppression can only survive through silence.

We know next to nothing about virtually everything. It is not necessary to know the origin of the universe; it is necessary to want to know. Civilization depends not on any particular knowledge, but on the disposition to crave knowledge.

The hardest thing to learn in life is which bridge to cross and which to burn.