We are citizens of the world. The tragedy of our times is that we do not know this.

Find out who you are. And do it on purpose.

Perseverance is failing 19 times and succeeding the 20th.

You can chain me, you can torture me, you can even destroy this body, but you will never imprison my mind.

My heroes are the ones who survived doing it wrong, who made mistakes, but recovered from them.

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

Good thoughts bear good fruit, bad thoughts bear bad fruit.

I am always doing that which I can not do, in order that I may learn how to do it.

Today I shall behave, as if this is the day I will be remembered.

To myself I am only a child playing on the beach, while vast oceans of truth lie undiscovered before me.

Everything you can imagine is real.

Don't find fault, find a remedy; anybody can complain

It always seems impossible until it's done.

I confess that in 1901 I said to my brother Orville that man would not fly for fifty years.

I will never be by violence constrained to do anything.

Knowing what's right doesn't mean much unless you do what's right.

Courage is the thing. All goes if courage goes.

If you are humble nothing will touch you, neither praise nor disgrace, because you know what you are.

We are what we repeatedly do. Excellence, then, is not an act, but a habit.

Victory is for those who can say 'Victory is mine'. Success is for those who can begin saying 'I will succeed' and say 'I have succeeded' in the end.

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