“An optimist is a man who has never had much experience.”
“A pessimist is a person who has had to listen to too many optimists.”
“The man who is a pessimist before 48 knows too much; if he is an optimist after it he knows too little.”
“No man needs a vacation so much as the man who has just had one.”
“It is much more sensible to be an optimist instead of a pessimist, for if one is doomed to disappointment, why experience it in advance?”
“A man who has spent most of his adult life trying out a series of patent medicines is always an optimist.”