Quote #24169
Physical concepts are free creations of the human mind, and are not, however it...
Quote #1904
Democracy is, first and foremost, a spiritual force, it is built upon a spiritual...
Quote #9510
A certain amount of danger is essential to the quality of life.
Quote #15279
In idleness there is a perpetual despair.
Quote #48
Nothing ever goes away.
Quote #1267
There is no “royal road” to geometry.
Quote #10527
Whether you like it or not, history is on our side. We will bury...
Quote #8475
The happiest people seem to be those who have no particular reason for being...
Quote #18921
Man is not the creature of circumstances. Circumstances are the creatures of men.
Quote #19541
Your only obligation in any lifetime is to be true to yourself.