“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.”

“Duty is the demand of the hour.”

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

“What is not fully understood is not possessed.”

“Knowing I lov'd my books, he furnish'd me From mine own library with volumes that I prize above my dukedom.”

“I'll teach you differences.”

“Plutus himself,That knows the tinct and multiplying med'cine,Hath not in nature's mystery more scienceThan I have in this ring.”