The path of social advancement is, and must be, strewn with broken friendships.

If only I had thought of a Kodak! I could have flashed that glimpse of the Under-world in a second, and examined it at leisure.

You must follow me carefully. I shall have to controvert one or two ideas that are almost universally accepted. The geometry, for instance, they taught you at school is founded on a misconception.

This blessed gift of smoking!

There will be little drudgery in this better ordered world. Natural power harnessed in machines will be the general drudge. What drudgery is inevitable will be done as a service and duty for a few years or months out of each life; it will not consume nor degrade the whole life of anyone.

An artist who theorizes about his work is no longer artist but critic.

Affliction comes to us, not to make us sad but sober; not to make us sorry but wise.