I do not believe in the commercial possibility of induced radioactivity.

Reality is the cage of those who lack imagination.

It was a reaction from the old idea of "protoplasm", a name which was a mere repository of ignorance.

The extreme socialists desire to run every nation as a single business concern.

If materialism is true, it seems to me that we cannot know that it is true. If my opinions are the result of the chemical processes going on in my brain, they are determined by the laws of chemistry, not those of logic.

Shelley and Keats were the last English poets who were at all up to date in their chemical knowledge.

You can drop a mouse down a thousand-yard mine shaft and, on arriving at the bottom, it gets a slight shock and walks away. A rat would probably be killed, though it can fall safely from the eleventh story of a building, a man is broken, a horse splashes.