“There is no failure except in no longer trying.”

“Those who educate children well are more to be honored than they who produce them for these only gave them life, those the art of living well.”

“Success is often achieved by those who don't know that failure is inevitable.”

“Science must have originated in the feeling that something was wrong.”

“Life would be tragic if it weren't funny.”

“If there is something to pardon in everything, there is also something to condemn.”