The imitator dooms himself to hopeless mediocrity. The inventor did it because it was natural to him, and so in him it has a charm. In the imitator something else is natural, and he bereaves himself of his own beauty, to come short of another man's.

We pass for what we are.

I know of no such unquestionable badge and ensign of a sovereign mind as that of tenacity of purpose.

When I read a good book, I wish my life were three thousand years long.

Greatness is a property for which no man gets credit too soon; it must be possessed long before it is acknowledged.

Enthusiasm is the engine of success.

The writer is an explorer. Every step is an advance into a new land.