Men fear thought as they fear nothing else on earth -- more than ruin, more even than death. Thought is subversive and revolutionary, destructive and terrible, thought is merciless to privilege, established institutions, and comfortable habits; thought is anarchic and lawless, indifferent to authority, careless of the well-tried wisdom of the ages. Thought looks into the pit of hell and is not afraid ... Thought is great and swift and free, the light of the world, and the chief glory of man.
I was recently told, 'You're a liar!' when I said to somebody I walked down the spine of the Andes. Every Spaniard in the sixteenth, seventeenth century did that. The idea that somebody could just walk! He can jog perhaps in the morning, but he can't walk anywhere! The world has become inaccessible because we drive there.