Whatever the mind of man can conceive and believe, it can achieve.

We must have perserverence and above all confidence in ourselves. We must believe that we are gifted for something.

How long should you try? Until.

We are all in the gutter, but some of us are looking at the stars.

The marble not yet carved can hold the form of every thought the greatest artist has.

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

Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young.

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

Do you want to know who you are? Don't ask. Act! Action will delineate and define you.

Never look back unless you are planning to go that way.

They deem me mad because I will not sell my days for gold; and I deem them mad because they think my days have a price.

Why live an ordinary life, when you can live an extraordinary one.

You're never as good as everyone tells you when you win, and you're never as bad as they say when you lose.

Don't complain about the snow on your neighbor's roof when your own doorstep is unclean.

He that can have patience can have what he will.

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

Never trust the advice of a man in difficulties.

A sudden dart when a little over a hundred feet from the end of the track, or a little over 120 feet from the point at which it rose into the air, ended the flight.

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.

The past cannot be changed. The future is yet in your power.

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