I've always been better moving than I am standing still.

If you don't start somewhere, you're gonna go nowhere.

Take any path you like; follow any prophet you like; but have only that method which suits your own nature, so that you will be sure to progress.

Without death there would be very little progress.

Social progress can be measured by the social position of the female sex.

Relentlessness and discontent are the first necessities of progress.