Restlessness is discontent and discontent is the first necessity of progress. Show me a thoroughly satisfied man and I will show you a failure.

There is a subtle danger in a man thinking that he is "fixed" for life. It indicates that the next jolt of the wheel of progress is going to fling him off.

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.

All progression is in the relative world.

Unless we progress, we regress.

True progress is slow but sure.