“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.”

“Statistics have proven that the surest way to get anything out of the public mind and never hear of it again is to have a Senate committee appointed to look into it.”

“The United States investigates everything - usually after it's dead.”

“You can't solve a problem? Well, get down and investigate the present facts and [the problem's] past history! When you have investigated the problem thoroughly, you will know how to solve it.”