What you want is practice, practice, practice. It doesn’t matter what we write (at least this is my view) at our age, so long as we write continually as well as we can. I feel that every time I write a page either of prose or of verse, with real effort, even if it’s thrown into the fire the next minute, I am so much further on.

Man's conquest of Nature, if the dreams of some scientific planners are realized, means the rule of a few hundreds of men over billions upon billions of men. There neither is nor can be any simple increase of power on Man's side. Each new power won by man is a power over man as well.

You can begin as if nothing had ever gone wrong. White as snow.

The more lucidly we think, the more we are cut off: the more deeply we enter into reality, the less we can think.

Gone! And you and I quite crestfallen. It’s always like that, you can’t keep him; it’s not as if he were a tame lion.

Really, a young Atheist cannot guard his faith too carefully. Dangers lie in wait for him on every side.

You can do more with a castle in a story than with the best cardboard castle that ever stood on a nursery table.