“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.”

“What light through yonder window breaks?”

“a wild dedication of yourselves To undiscovered waters, undreamed shores.”

“Every known fact in natural science was divined by the presentiment of somebody, before it was actually verified.”