“We may brave human laws, but we cannot resist natural ones.”

“Being entirely honest with oneself is a good exercise.”

“Freedom from effort in the present merely means that there has been effort stored up in the past.”

“Everything human is pathetic. The secret source of humor itself is not joy but sorrow. There is no humor in heaven.”

“You can always tell someone to go to Hell tomorrow.”

“If I'd listened to customers, I'd have given them a faster horse.”