More than fantasy or even science fiction Ray Bradbury wrote horror and like so many great horror writers he was himself utterly without fear of anything. He wasn't afraid of looking uncool - he wasn't scared to openly love innocence or to be optimistic or to write sentimentally when he felt that way.
Truth of a modest sort I can promise you and also sincerity. That complete praiseworthy sincerity which while it delivers one into the hands of one's enemies is as likely as not to embroil one with one's friends.
It is great happiness to be praised of them who are most praiseworthy.
Let us not listen to those who think we ought to be angry with our enemies and who believe this to be great and manly. Nothing is so praiseworthy nothing so clearly shows a great and noble soul as clemency and readiness to forgive.