At this point, realism is perhaps the least adequate means of understanding or portraying the incredible realities of our existence.

Why can I never set my heart on a possible thing?

Take the tale in your teeth, then, and bite till the blood runs, hoping it's not poison.

When I'm writing I don't dream much; it's like the dreaming gets used in the writing.

It is only when science asks why, instead of simply describing how, that it becomes more than technology. When it asks why, it discovers Relativity. When it only shows how, it invents the atom bomb, and then puts its hands over its eye and says, My God what have I done?

Part of the particular interest and beauty of science fiction and fantasy: writer and reader collaborate in world-making.

The quality of the will to power is, precisely, growth. Achievement is its cancellation. To be, the will to power must increase with each fulfillment, making the fulfillment only a step to a further one. The vaster the power gained the vaster the appetite for more.