Faith, as well intentioned as it may be, must be built on facts, not fiction faith in fiction is a damnable false hope.

I never did a day's work in my life. It was all fun.

If I find 10, 000 ways something won't work, I haven't failed. I am not discouraged, because every wrong attempt discarded is another step forward.

If we all did the things we are capable of doing, we would literally astound ourselves.

The doctor of the future will give no medicine, but will interest her or his patients in the care of the human frame, in a proper diet, and in the cause and prevention of disease.

There is no expedient to which a man will not go to avoid the labor of thinking.

We don't know a millionth of one percent about anything.