It's all connected. When you save any part of the world, you've saved the whole world. In fact, that's the only way it can be done.

Someday is someday, and maybe it will be or maybe it won't. This is a human thing, to worry about things that may or may not come to be. You can't eat meat until you've killed it.

Useless to worry until we find outselves blocked. ... If it happens, then we must simply find a way around it. It may slow us down. But we will never get there at all if we stand still and worry.

...To free humanity of time. For time is the great enslaver of us all. Time that ages us, time that limits us. Think how often you have wished to have more time for something, or wished you could go back a day and do something differently. When humanity is freed of time, old wrongs can be corrected before they are done.

Boredom is vastly underrated. Boredom means that nothing is trying to kill you every day.

When considering a man's motives, remember you must not measure his wheat with your bushel. He may not be using the same standard at all.

Men of passion and vision are often seen as mad.