Bite your tongue. Get a cinder in your eye. When you feel good, you feel nothing.

Our beds are empty two-thirds of the time. Our living rooms are empty seven-eighths of the time. Our office buildings are empty one-half of the time. It's time we gave this some thought.

I do not look upon human beings as good or bad.

I must reorganize the environment of man by which then greater numbers of men can prosper.

Children are born true scientists. They spontaneously experiment and experience and reexperience again. They select, combine, and test, seeking to find order in their experiences - "which is the mostest? which is the leastest?" They smell, taste, bite, and touch-test for hardness, softness, springiness, roughness, smoothness, coldness, warmness: they heft, shake, punch, squeeze, push, crush, rub, and try to pull things apart.

"The further art advances the closer it approaches science," said Leonardo da Vinci, painter, sculptor, architect, engineer, and inventor of the wheelbarrow, and other useful instruments from the speaking tube to a mechanically gyp-proof whore-house, "the further science advances the closer it approaches art."

What humans have spontaneously identified as good and bad - or as positive and negative - are evolutionary complementations in need of more accurate identifications.