If you think you can do a thing or think you can't do a thing, you're right.  

The way to get started is to quit talking and begin doing.

Capital as such is not evil; it is its wrong use that is evil. Capital in some form or other will always be needed.

Man becomes great exactly in the degree in which he works for the welfare of his fellow-men.

Take up one idea. Make that one idea your life - think of it, dream of it, live on that idea. Let the brain, muscles, nerves, every part of your body, be full of that idea, and just leave every other idea alone. This is the way to success

All the problems of the world could be settled easily if men were only willing to think. The trouble is that men very often resort to all sorts of devices in order not to think, because thinking is such hard work. 

Real education enhances the dignity of a human being and increases his or her self-respect. If only the real sense of education could be realized by each individual and carried forward in every field of human activity, the world will be so much a better place to live in.

 Lies die a natural death but truth chases us forever.

You have to grow from the inside out. None can teach you, none can make you spiritual. There is no other teacher but your own soul.

There could be no fairer destiny for any physical theory than that it should point the way to a more comprehensive theory in which it lives on as a limiting case. 

The great accomplishments of man have resulted from the transmission of ideas and enthusiasm.