The only man who never makes a mistake is the man who never does anything.
Theodore Roosevelt

I don't pity any man who does hard work worth doing. I admire him. I pity the creature who does not work, at whichever end of the social scale he may regard himself as being.
Theodore Roosevelt

I took the Canal Zone and let Congress debate; and while the debate goes on, the canal does also.
Theodore Roosevelt

It behooves every man to remember that the work of the critic is of altogether secondary importance, and that, in the end, progress is accomplished by the man who does things.
Theodore Roosevelt

Only the man who does not need it, is fit to inherit wealth, the man who would make his fortune no matter where he started.
Ayn Rand

That which does not kill us makes us stronger.
Friedrich Nietzsche

Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you.
Friedrich Nietzsche

What does not destroy me, makes me stronger.
Friedrich Nietzsche

A casual stroll through the lunatic asylum shows that faith does not prove anything.
Friedrich Nietzsche

You have your way. I have my way. As for the right way, the correct way, and the only way, it does not exist.
Friedrich Nietzsche

Whoever battles with monsters had better see that it does not turn him into a monster. And if you gaze long into an abyss, the abyss will gaze back into you.
Friedrich Nietzsche

Does wisdom perhaps appear on the earth as a raven which is inspired by the smell of carrion?
Friedrich Nietzsche

There are horrible people who, instead of solving a problem, tangle it up and make it harder to solve for anyone who wants to deal with it. Whoever does not know how to hit the nail on the head should be asked not to hit it at all.
Friedrich Nietzsche

Before the effect one believes in different causes than one does after the effect.
Friedrich Nietzsche

The aphorism in which I am the first master among Germans, are the forms of "eternity"; my ambition is to say in ten sentences what everyone else says in a book - what everyone else does not say in a book.
Friedrich Nietzsche

Every church is a stone on the grave of a god-man: it does not want him to rise up again under any circumstances.
Friedrich Nietzsche

Great indebtedness does not make men grateful, but vengeful; and if a little charity is not forgotten, it turns into a gnawing worm.
Friedrich Nietzsche

If a woman possesses manly virtues one should run away from her; and if she does not possess them she runs away from herself.
Friedrich Nietzsche

When one does away with oneself one does the most estimable thing possible: one thereby almost deserves to live.
Friedrich Nietzsche

Experience, as a desire for experience, does not come off. We must not study ourselves while having an experience.
Friedrich Nietzsche