Waste no more time arguing about what a good man should be. Be one.

This is one small step for a man, one giant leap for mankind.

Failure is not our only punishment for laziness; there is also the success of others.

People who are unable to motivate themselves must be content with mediocrity, no matter how impressive their other talents.

Don't stop chasing your dreams, because dreams do come true.

Without ambition one starts nothing. Without work one finishes nothing. The prize will not be sent to you. You have to win it.

You can't live a perfect day until you do something for someone who will never be able to repay you.

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

After climbing a great hill, one only finds that there are many more hills to climb.

He that can have patience can have what he will.

If we go down into ourselves, we find that we possess exactly what we desire.

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

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

Great things are not done by impulse, but by a series of small things brought together.

Crave for a thing, you will get it. Renounce the craving, the object will follow you by itself.

Great spirits have always encountered violent opposition from mediocre minds.

The fact that the great scientist believed in flying machines was the one thing that encouraged us to begin our studies.

You can wish for things in the future to be different, but in this moment you have to accept things as they are.

We are what our thoughts have made us; so take care about what you think. Words are secondary. Thoughts live; they travel far.

When we see men of a contrary character, we should turn inwards and examine ourselves.

It's kind of fun to do the impossible.