I have not failed. I've just found ten thousand ways that won't work.

· Thomas Edison

The journey of a thousand miles begins with a single step.

· Lao Tzu

It always seems impossible until it's done.

· Nelson Mandela

He who has a why to live can bear almost any how.

· Friedrich Nietzsche

It does not matter how slowly you go as long as you do not stop.

· Confucius

The present is theirs; the future, for which I really worked, is mine.

· Nikola Tesla