The first requisite for success is the ability to apply your physical and mental energies to one problem incessantly without growing weary.

I haven't failed, I've found 10,000 ways that don't work.

The brain can be developed just the same as the muscles can be developed, if one will only take the pains to train the mind to think. Why do so many men never amount to anything? Because they don't think.

There's a way to do it better...find it.

The best thinking has been done in solitude. The worst has been done in turmoil.

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

Show me a thoroughly satisfied man, and I will show you a failure.

Restlessness and discontent are the necessities of progress.

Opportunity is missed by most people because it is dressed in overalls and looks like work.

Non violence leads to the highest ethics, which is the goal of all evolution. Until we stop harming all other living beings, we are still savages.

Nearly every man who develops an idea works it up to the point where it looks impossible, and then he gets discouraged. That's not the place to become discouraged.

Time is really the only capital that any human being has, and the only thing he can't afford to lose.

Ignorance is the night of the mind, but a night without moon or star.