Odd that the brain could function on its own, without acquainting him with its purposes, its reasons. But the brain was an organ, like the spleen, he… - Philip K. Dick

It isn't a brute instinct that keeps us restless and dissatisfied. I'll tell you what it is: it's the highest goal of man - the need to grow and advance . . . to find new things . . . to expand. To spread out, reach areas, experiences, comprehend and live in an evolving fashion. To push aside routine and repetition, to break out of mindless monotony and thrust forward. To keep moving on . . .

I became educated to the fact that the greatest pain does not come zooming down from a distant planet, but from the depths of the heart. Of course, both could happen; your wife and child could leave you, and you could be sitting alone in your empty house with nothing to live for, and in addition the Martians could bore through the roof and get you.

How can days and happenings and moments so good become so quickly ugly, and for no reason, for no real reason? Just — change. With nothing causing it.