“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.”

“I am declinedInto the vale of years.”

“What should we speak of When we are old as you? when we shall hear The rain and wind beat dark December? how, In this our pinching cave, shall we discourse The freezing hours away?”

“My way of lifeIs fall'n into the sear and yellow leaf.”