Anything will give up its secrets if you love it enough.

Never a day passes but that I do myself the honor to commune with some of nature's varied forms.

One reason I never patent my products is that if I did it would take so much time, I would get nothing else done. But mainly I don't want my discoveries to benefit specific favored persons.

When you can do the common things of life in an uncommon way, you will command the attention of the world.

One of the things that has helped me as much as any other is not how long I am going to live, but how much I can do while living.

My purpose alone must be God's purpose.

There is no shortcut to achievement.