The hardest thing about being famous is that people are always nice to you. You're in a conversation and everybody's agreeing with what you're saying - even if you say something totally crazy. You need people who can tell you what you don't want to hear.
If there existed no external means for dimming their consciences one-half of the men would at once shoot themselves because to live contrary to one's reason is a most intolerable state and all men of our time are in such a state.