Quote #19782
To have doubted one’s own first principles is the mark of a civilized man.
Quote #1324
Formerly, when religion was strong and science weak, men mistook magic for medicine; now,...
Quote #25319
So, rather than appear foolish afterward, I renounce seeming clever now.
Quote #33143
Courage is the art of being the only one who knows you’re scared to...
Quote #6875
Formulate and stamp indelibly on your mind a mental picture of yourself as succeeding....
Quote #11938
People, even more than things, have to be restored, renewed, revived, reclaimed, and redeemed;...
Quote #25785
The word impossible is not in my dictionary.
Quote #11036
I am among those who think that science has great beauty. A scientist in...
Quote #15057
Let your friends be the friends of your deliberate choice.
Quote #15236
My country owes me nothing. It gave me, as it gives every boy and...