Do not be afraid. Do not be satisfied with mediocrity. Put out into the deep and let down your nets for a catch.

Change your thoughts and you change your world.

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

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

If you put off everything till you're sure of it, you'll never get anything done.

The way to become rich is to put all your eggs in one basket and then watch that basket.

Be more concerned with your character than your reputation, because your character is what you really are, while your reputation is merely what others think you are.

Never trust the advice of a man in difficulties.

Never tell all you know-not even to the person you know best.

If the only tool you have is a hammer, you tend to see every problem as a nail.

We do not consider our principles as dogmas contained in books said to come from heaven. We derive our inspiration, not from heaven, or the unseen world, but directly from life.

I will never be by violence constrained to do anything.

Things may come to those who wait but only the things left by those who hustle.

A man may die, nations may rise and fall, but an idea lives on.

I seldom end up where I wanted to go, but almost always end up where I need to be.

Nothing great was ever achieved without enthusiasm.

Look up at the stars and not down at your feet. Try to make sense of what you see, and wonder about what makes the universe exist. Be curious.

Do what you can, with what you have, where you are.

You have brains in your head. You have feet in your shoes. You can steer yourself any direction you choose.

It's the possibility of having a dream come true that makes life interesting.

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