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.
Ignorance more frequently begets confidence than does knowledge: it is those who know little, and not those who know much, who so positively assert that this or that problem will never be solved by science.
Maybe true travel is not the transportation of the body, but a change of perception, renewing the mind.
Education is the most powerful weapon which you can use to change the world.
The test of a first rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.
The solutions all are simple…after you have arrived at them. But they’re simple only when you know already what they are.
No Quran, no Bible, no Gita, no Cow, is greater than the human self.
You cannot conquer a free man. The most you can do is kill him.
I think that we must find some way to get more common sense, more rationality, in our decisions and less emotion.
Education consists mainly of what we have unlearned.