The farther we get away from the land, the greater our insecurity.

There are three things that grow more precious with age; old wood to burn, old books to read, and old friends to enjoy.

Whatever you have, you must either use or lose.

Money doesn't change men, it merely unmasks them. If a man is naturally selfish or arrogant or greedy, the money brings that out, that's all.

The time will come when man will know even what is going on in the other planets and perhaps be able to visit them.

The most difficult job is the one that you never get started on.

I invented nothing new. I simply assembled the discoveries of other men behind whom were centuries of work. Had I worked fifty or ten or even five years before, I would have failed. So it is with every new thing. Progress happens when all the factors that make for it are ready, and then it is inevitable. To teach that a comparatively few men are responsible for the greatest forward steps of mankind is the worst sort of nonsense.