Pessimism can offer only the empty consolation of being right.
The tragedy is not what we suffer, but what we miss.
Be inobviously tuitive.
Threats are expensive when they fail; promises are expensive when they succeed.
Look if you like, but you will have to leap.
A proof tells us where to concentrate our doubts.
We can learn a lot about ourselves by studying the lower animals, especially those of our own species.
Take it easy, but take it.