To do much clear thinking a person must arrange for regular periods of solitude when they can concentrate and indulge the imagination without distraction.

Success is the product of the severest kind of mental and physical application.

Accomplishing something provides the only real satisfaction in life.

I never once failed at making a light bulb. I just found out 99 ways not to make one.

I never quit until I get what I want.

Unfortunately, there seems to be far more opportunity out there than ability.... We should remember that good fortune often happens when opportunity meets with preparation.

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