Quote #5897
Your sole contribution to the sum of things is yourself.
Quote #22621
You ought not to practice childish ways, since you are no longer that age.
Quote #16335
Americans cannot realize how many chances for mental improvement they lose by their inveterate...
Quote #5535
No man who ever held the office of president would congratulate a friend on...
Quote #10412
As for everything else, so for mathematical theory: beauty can be perceived but not...
Quote #8098
Courage is knowing what not to fear.
Quote #29559
Advertising is a valuable economic factor because it is the cheapest way of selling...
Quote #34448
The best plan is to profit by the folly of others.
Quote #22614
I should rather labor as another’s serf, in the home of a man without...
Quote #6471
Most institutions demand unqualified faith; but the institution of science makes skepticism a virtue.