Carl Trueman, professor in the Alva J. Calderwood School of Arts and Letters at Grove City College, Pennsylvania, begins his upper-level humanities course by informing the students of his “broad educational philosophy” thus:
I am over fifty. I no longer care what anyone except my wife thinks about me. That particularly applies to anyone under the age of thirty-five. You should therefore feel free to disagree with me on anything I say because it is virtually impossible to offend me. But I must also add that, old and closed-minded as I am, I have no vested interest in holding an incorrect opinion on anything. Therefore, if you think I am wrong on some issue, be it historical, philosophical, or ethical, then you are under a moral obligation to persuade me to change my mind. But when you do so, please give me an argument, not some emotional plea based on your feelings. After all, if you simply feel I am wrong and I simply feel I am right, we’ll quickly find ourselves at an impasse.