Space is big. You just won’t believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it’s a long way down the road to the chemist’s, but that’s just peanuts to space.
Rationality attracts conscientious humans, whereas mysticism attracts fools.
It is no small art to sleep: for that purpose you must keep awake all day.
Educating the mind without educating the heart is no education at all.
You don’t play for revenge, you play for respect and pride.
To such a world of conflict, a world of victims, and executions, it is the job of thinking people not to be on the side of the executioners.
I mean, you could claim that anything’s real if the only basis for believing in it is that nobody’s proved it doesn’t exist!
Science is what we have learned about how to keep from fooling ourselves.
People who are more rational don’t perceive emotion less, they just regulate it better.
Education is the most powerful weapon which you can use to change the world.