Maturity is often more absurd than youth and very frequently is most unjust to youth.

Be courageous. I have seen many depressions in business. Always America has emerged from these stronger and more prosperous. Be brave as your fathers before you. Have faith! Go forward!

I owe my success to the fact that I never had a clock in my workroom.

I've realized that most of my best ideas have followed a good night's sleep.

My mind is incapable of conceiving such a thing as a soul. I may be in error, and man may have a soul; but I simply do not believe it.

Of the 200 light bulbs that didn't work, every failure told me something that I was able to incorporate into the next attempt.

Having a vision for what you want is not enough...Vision without execution is hallucination