Hugh W. Nibley
A true philosopher can no more pass by the open door of a free discussion than an alcoholic can pass by the open door of a saloon. Since my hosts have been kind enough to invite me to say what I think, the highest compliment I can pay to their tolerance and liberality will be to do just that. This is not going to be a debate. I would be the most unteachable of mortals if at this stage of life I still believed that one could get anywhere arguing with a dialectician. One might as well attempt to pacify or intimidate a walrus by tossing sardines at him as to bait a philosopher with arguments. I have accepted your kind invitation because I think the subject is worth discussing.
A professor is not one who knows, but one who professes to know, and thus is constantly in the position of inviting challenge.... He professes publicly where everyone is invited to come and challenge, and at any time he must be willing and able to defend it openly against all comers. The degree is originally a chivalric devicea gauntlet of defiance to all rivalsand not a safe rampart or dug-out for a scholar to hide behind in safe immunity from any challenge.