“The one serious conviction that a man should have is that nothing is to be taken too seriously.”

“An expert is one who knows more and more about less and less until he knows absolutely everything about nothing.”

“An expert is someone who knows more and more about less and less.”

“An expert is one who knows more and more about less and less.”

“He was from a different class, too poor, and they would never approve if their daughter became serious with someone like him.”

“I said to him one day that the very slender reward which God had attached to the pursuit of serious inquiry was a sufficient proof that He disapproved of it, or at any rate that he did not set much store by it nor wish to encourage it.”

“It's your eyes. They're ... more serious than they used to be. Like they've seen things they shouldn't have.”