It is better, of cours, to know useless things than to know nothing.
It is quality rather than quantity that matters.
Fire is the test of gold; adversity, of strong men.
There is no great genius without some touch of madness.
If we let things terrify us, life will not be worth living.
Live among men as if God beheld you; speak to God as if men were listening.
You can tell the character of every man when you see how he receives praise.
It is not the man who has too little, but the man who craves more, that is poor.