Happiness depends more on the inward disposition of mind than on outward circumstances.

I'd rather be an optimist and a fool than a pessimist and right.

The duty of youth is to challenge corruption.

It may have been in pieces, but I gave you the best of me.

Too much sanity may be madness - and the maddest of all is to see life as it is and not as it should be.

Whether you think you can, or you think you can't - you're right.

There is no refuge from confession but suicide; and suicide is confession.

When you arise in the morning think of what a privilege it is to be alive, to think, to enjoy, to love ...

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

First they ignore you, then they ridicule you, then they fight you, and then you win.

Your success and happiness lies in you. Resolve to keep happy, and your joy and you shall form an invincible host against difficulties.

Neither worse then or better is a thing made by being praised.

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

A pure hand needs no glove to cover it.

Always do what you are afraid to do.

If you think in terms of a year, plant a seed; if in terms of ten years, plant trees; if in terms of 100 years, teach the people.

Never stand begging for what one has the power to earn.

If my mind can conceive it, and my heart can believe it - then I can achieve it.

Dare to live the life you have dreamed for yourself. Go forward and make your dreams come true.

The time is always right to do the right thing

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