Five percent of the people think; ten percent of the people think they think; and the other eighty-five percent would rather die than think.
It is astonishing what an effort it seems to be for many people to put their brains definitely and systematically to work.
The first requisite for success is the ability to apply your physical and mental energies to one problem incessantly without growing weary.
I find out what the world needs. Then I go ahead and try to invent it.
I have not failed. I've just found 10,000 ways that won't work.
When you have exhausted all possibilities, remember this - you haven't.
I never did a day's work in my life, it was all fun.
The doctor of the future will give no medication, but will interest his patients in the care of the human frame, diet and in the cause and prevention of disease.
The most necessary task of civilization is to teach people how to think.
It should be the primary purpose of our public schools.
The mind of a child is naturally active, it develops through exercise.
Give a child plenty of exercise, for the body and brain...
It casts the brain into a mold.
It insists that the child must accept.
It does not encourage original thought or reasoning, and it lays more stress on memory than observation.