“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.”

“O! that a man might know The end of this day's business, ere it come; But it sufficeth that the day will end, And then the end is known.”

“Cease to lament for that thou canst not help; and study help for that which thou lamentest.”

“Be still prepared for death: and death or life shall thereby be the sweeter.”