I know little about nature and hardly anything about men.
The restriction of knowledge to an elite group destroys the spirit of the society and leads to its intellectual impoverishment.
Creativity is contagious. Pass it on.
In the shadow of the atomic bomb it has become even more apparent that all men are, indeed, brothers.
If the bees disappear, man would have only four years of life left.
You can never solve a problem with the same kind of thinking that created the problem in the first place.