Quote #21065
Skepticism means, not intellectual doubt alone, but moral doubt.
Quote #22564
Give to every other human being every right that you claim for yourself.
Quote #15491
Memory depends very much on the perspicuity, regularity, and order of our thoughts. Many...
Quote #11100
Now there is one outstandingly important fact regarding Spaceship Earth, and that is that...
Quote #5407
Concentration comes out of a combination of confidence and hunger.
Quote #24567
One’s friends are that part of the human race with which one can be...
Quote #29866
I cannot join the space program and restart my life as an astronaut, but...
Quote #6747
To be able to fill leisure intelligently is the last product of civilization, and...
Quote #30573
I will have no man work for me who has not the capacity to...
Quote #10058
Luck? Sure. But only after long practice and only with the ability to think...