We must make it clear that revolution does not merely mean an upheaval or a sanguinary strife. Revolution necessarily implies the programme of systematic reconstruction of society on new and better adapted basis after complete destruction of the existing state of affairs (i.e., regime).

Failure comes only when we forget our ideals and objectives and principles.

Concern for man and his fate must always form the chief interest of all technical endeavors. Never forget this in the midst of your diagrams and equations.

Results! Why, man, I have gotten a lot of results. I know several thousand things that won't work.

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

Increase of material comforts, it may be generally laid down, does not in any way whatsoever conduce to moral growth.

In this world nothing can be said to be certain, except death and taxes.  

You can't learn in school what the world is going to do next year.  

My biological mother later found out that my mother had never graduated from college and that my father had never graduated from high school. She refused to sign the final adoption papers. She only relented a few months later when my parents promised that I would someday go to college.

I believe in equality for everyone, except reporters and photographers.

Whatever you have, you must either use or lose. 

I love Mickey Mouse more than any woman I have ever known.