There is no great genius without some touch of madness.
Fire is the test of gold; adversity, of strong men.
It is better, of cours, to know useless things than to know nothing.
You can tell the character of every man when you see how he receives praise.
It is quality rather than quantity that matters.
In giving advice, seek to help, not please, your friend.
The best ideas are common property.
It is not the man who has too little, but the man who craves more, that is poor.