Politics is for the present, but an equation is for eternity.
Humankind's desire for peace can be realized only by the creation of a world government.
The dog is very smart. He feels sorry for me because I receive so much mail; that's why he tries to bite the mailman.
As long as there are sovereign nations possessing great power, war is inevitable.
Science is a wonderful thing if one does not have to earn one's living at it.
A desk, some pads, a pencil, and a large basket -- to hold all of mu mistakes.