“While we are postponing, life speeds by”

“The effect of power and publicity on all men is the aggravation of self, a sort of tumor that ends by killing the victim's sympathies ”

“A teacher affects eternity; he can never tell, where his influence stops”

“Glory is fleeting, but obscurity is forever.”

“Some day science may have the existence of mankind in power, and the human race can commit suicide by blowing up the world”

“Life is half spent before we know what it is ”