There is precious instruction to be got by finding we were wrong.

The true past departs not, no truth or goodness realized by man ever dies, or can die; but all is still here, and, recognized or not, lives and works through endless change.

Nothing stops the man who desires to achieve. Every obstacle is simply a course to develop his achievement muscle. It's a strengthening of his powers of accomplishment.

Coining "Dismal Science" as a nickname for Political Economy

Long stormy spring-time, wet contentious April, winter chilling the lap of very May; but at length the season of summer does come.

The world is a republic of mediocrities, and always was.

All that mankind has done, thought or been: it is lying as in magic preservation in the pages of books.