A professor is not one who ...

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 device-a gauntlet of defiance to all rivals-and not a safe rampart or dug-out for a scholar to hide behind in safe immunity from any challenge.
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 Hugh Nibley

Quotes from the same author

Work is, after all, not a busy running back and forth in established grooves, though that is the essence of our modern business and academic life, but the supreme energy and disciplined curiosity required to cut new grooves.
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 Hugh Nibley
What on earth have a man's name, degree, academic position, and of all things, opinions, to do with whether a thing is true?
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 Hugh Nibley
Only if you reach the boundary will the boundary recede before you. And if you don't, if you confine your efforts, the boundary will shrink to accommodate itself to your efforts. And you can only expand your capacities by working to the very limit.
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 Hugh Nibley
Knowledge can be heady stuff, but it easily leads to an excess of zeal! -- to illusions of grandeur and a desire to impress others and achieve eminence . . . Our search for knowledge should be ceaseless, which means that it is open-ended, never resting on laurels, degrees, or past achievements.
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 Hugh Nibley
God's command to have dominion over every living thing is a call to service, a test of responsibility, a rule of love, a cooperation with nature, whereas Satan's use of force for the sake of getting gain renders the earth uninhabitable. Brigham Young's views on the environment direct attention to man's responsibility to beautify the earth, to eradicate the influences of harmful substances, and to use restraint, that the earth may return to its paradisiacal glory.
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 Hugh Nibley