In a day, when you don't come across any problems - you can be sure that you are travelling in a wrong path.

Perseverance is failing 19 times and succeeding the 20th.

I'll try anything once, twice if I like it, three times to make sure.

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

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

Keep your face to the sunshine and you will never see the shadow.

Freedom and independence form my character.

It's all to do with the training: you can do a lot if you're properly trained.

Man needs his difficulties because they are necessary to enjoy success.

Only those are fit to live who do not fear to die; and none are fit to die who have shrunk from the joy of life and the duty of life. Both life and death are parts of the same Great Adventure.

Do not count your chickens before they are hatched.

The power for creating a better future is contained in the present moment: You create a good future by creating a good present.

What lies behind us and what lies before us are tiny matters compared to what lies within us.

Most people live and die with their music still unplayed. They never dare to try.

Freedom from the desire for an answer is essential to the understanding of a problem.

He that can have patience can have what he will.

Winners and losers aren't born, they are the products of how they think

If we command our wealth, we shall be rich and free. If our wealth commands us, we are poor indeed.

I can never stand still. I must explore and experiment. I am never satisfied with my work. I resent the limitations of my own imagination.

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

The limits of the possible can only be defined by going beyond them into the impossible.