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 cease from my occupation with philosophy. I will continue the practice of accosting whomever I meet and saying to him, 'Are you not ashamed of setting your heart on wealth and honours while you have no care for wisdom and truth and making your soul better?' I know not what death is—it may be a good thing, and I am not afraid of it. But I do know that it is a bad thing to desert one's post and I prefer what may be good to what I know to be bad."

(2) He insists on the public value of free discussion. "In me you have a stimulating critic, persistently urging you with persuasion and reproaches, persistently testing your opinions and trying to show you that you are really ignorant of what you suppose you know. Daily discussion of the matters about which you hear me conversing is the highest good for man. Life that is not tested by such discussion is not worth living."

Thus in what we may call the earliest justification of liberty of thought we have two significant claims affirmed: the indefeasible right of the conscience of the individual—a claim on which later struggles for liberty were to turn; and the social importance of discussion and criticism. The former claim is not based on argument but on intuition; it rests in fact on the