The word 'radical' derives from the Latin word for root. Therefore, if you want to get to the root of anything you must be radical. It is no accident that the word has now been totally demonized.
Gore VidalI Must warn you, Iris, that I'm not a believer. And though I'm sure that the revelations of other men must be a source of infinite satisfaction to them, individually, I shouldn't for one second be so presumptuous as to make a choice among the many thousands of recorded revelations of truth, accepting one at the expense of all the others: I might so easily choose wrong and get into eternal trouble. And you must admit that the selection is wide, and dangerous to the amateur.
Gore Vidal