You can prove anything you want by coldly logical reason---if you pick the proper postulates.
In life, people will take you at your own reckoning.
The whole world might know you and acclaim you, but someone in the past, forever unreachable, forever unknowing, spoils it all.
When I die I won't go to heaven or hell; there will just be nothingness.
Self-education is, I firmly believe, the only kind of education there is.
The intelligent man is never bored.