- Without earnestness no man is ever great, or does really great things. He may be the cleverest of men, he may be brilliant, entertaining, popular; but he will want weight. No soul-moving picture was ever painted that had not in it the depth of shadow.
- A man is relieved and gay when he has put his heart into his work and done his best; but what he has said or done otherwise shall give no peace.
- There is no substitute for thorough-going, ardent and sincere earnestness.
- He who would do some great thing in this short life, must apply himself to the work with such a concentration of his forces as to the idle spectators, who live only to amuse themselves, looks like insanity.