The First 40 hours of work per week are for survival. Everything after that is for success.
When you become quiet, it just dawns on you
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.
A genius is a talented person who does his homework.
The inventor tries to meet the demand of a crazy civilization.
There will one day spring from the brain of science a machine or force so fearful in its potentialities, so absolutely terrifying, that even man, the fighter, who will dare torture and death in order to inflict torture and death, will be appalled, and so abandon war forever.