''How do you know so much about everything?'' was asked of a very wise and intelligent man; and the answer was ''By never being afraid or ashamed to ask questions as to anything of which I was ignorant.
John Abbott (1821-1893) Canadian lawyer and statesman.
One thing only I know, and that is that I know nothing.
Socrates (BC 469-BC 399) Greek philosopher of Athens
If you have knowledge, let others light their candles with it.