I just invent, then wait until man comes around to needing what I've invented.

Mistakes are great, the more I make the smarter I get.

Love is a metaphysical gravity.

I am enthusiastic over humanity’s extraordinary and sometimes very timely ingenuity. If you are in a shipwreck and all the boats are gone, a piano top buoyant enough to keep you afloat that comes along makes a fortuitous life preserver. But this is not to say that the best way to design a life preserver is in the form of a piano top. I think that we are clinging to a great many piano tops in accepting yesterday’s fortuitous contrivings as constituting the only means for solving a given problem.

History's political and economic power structures have always abhorred 'idle people' as potential troublemakers. Yet nature never abhors seemingly idle trees, grass, snails, coral reefs, and clouds in the sky.

Never forget that you are one of a kind. Never forget that if there weren't any need for you in all your uniqueness to be on this earth, you wouldn't be here in the first place.

As long as one human being is hungry, the entire human race is hungry.