Thomas Edison

It is astonishing what an effort it seems to be for many people to put their brains definitely and systematically to work.
What a man's mind can create, man's character can control.
The body is a community made up of its innumerable cells or inhabitants.
To my mind the old masters are not art; their value is in their scarcity.
Maturity is often more absurd than youth and very frequently is most unjust to youth.
They say President Wilson has blundered. Perhaps he has, but I notice he usually blunders forward.
We don't know a millionth of one percent about anything.