“What is not started today is never finished tomorrow.”

“Whether one show one's self a man of genius in science or compose a song, the only point is, whether the thought, the discovery, the deed, is living and can live on.”

“A person hears only what they understand.”

“Duty is the demand of the hour.”

“He who cannot draw on three thousand years is living from hand to mouth.”

“Too busy with the crowded hour to fear to live or die.”

“He decided to give up his large ambition of knowledge and action for any narrow craft or profession, aiming at a much more comprehensive calling, the art of living.”

“Wisdom will never let us stand with any man on an unfriendly footing. We refuse sympathy and intimacy with people, as if we waited for some better sympathy or intimacy to come. But whence and when: Tomorrow will be like today. Life wastes itself while we are preparing to live.”