F. Scott Fitzgerald 
The Great Gatsby 

In my younger and more vulnerable years my father gave me some advice that I’ve been turning over in my mind ever since.
‘Whenever you feel like criticizing anyone, ‘ he told me, ‘just remember that all the people in this world haven’t had the advantages that you’ve had.’
He didn’t say any more, but we’ve always been unusually communicative in a reserved way, and I understood that he meant a great deal more than that. In consequence, I’m inclined to reserve all judgements, a habit that has opened up many curious natures to me and also made me the victim of not a few veteran bores. The abnormal mind is quick to detect and attach itself to this quality when it appears in a normal person, and so it came about that in college I was unjustly accused of being a politician, because I was privy to the secret griefs of wild, unknown men