"All learning has an emotional base."

"Wars and revolutions and battles, you see, are due simply and solely to the body and its desires. All wars are undertaken for the acquisition of wealth; and the reason why we have to acquire wealth is the body, because we are slaves in its service."

"It behooves those who take the young to task to leave them room for excuse, lest they drive them to be hardened by too much rebuke."

"The excessive increase of anything causes a reaction in the opposite direction."