“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.”

“To die, is to be banish'd from myself; And Silvia is myself: banish'd from her, Is self from self: a deadly banishment! What light is light, if Silvia be not seen? What joy is joy, if Silvia be not by? Unless it be to think that she is by, And feed upon the shadow of perfection. Except I be by Silvia in the night, There is no music in the nightingale; Unless I look on Silvia in the day, There is no day for me to look upon; She is my essence, and I leave to be, If I be not by her fair influence Foster'd, illumin'd, cherish'd, kept alive.”

“I cannot do it without comp[u]ters.”

“Our reliance on the physician is a kind of despair of ourselves.”