“Fear and realisation of ignorance, strong medicines against stupid pride.”

“Formerly, when religion was strong and science weak, men mistook magic for medicine; now, when science is strong and religion weak, men mistake medicine for magic. ”

“...but then the general trouble with ignorance is always that the ignorant person has no idea that that's what they are. You can be ignorant and stupid and go through your whole life without ever encountering any evidence against the hypothesis that you're a genius.”

“Ender didn't like fighting. He didn't like Peter's kind, the strong against the weak, and he didn't like his own kind either, the smart against the stupid.”

“It's not when you realise that nothing can help you - religion, pride, anything - it's when you realise that you don't need any aid.”

“The realisation that limitations are imaginary will make you strong and overpowering.”