Fifteen highly accomplished scholars who teach at Yale, Princeton, and Harvard published a letter Monday with advice for young people who are headed off to college: Though it will require self-discipline and perhaps even courage, “Think for yourself.”

The “vice of conformism” is a temptation for all faculty and students, they argue, due to a climate rife with group think, where it is “all-too-easy to allow your views and outlook to be shaped by dominant opinion” on a campus or in academia generally.

They warn that on many campuses, what John Stuart Mill called “the tyranny of public opinion” doesn’t merely discourage students from dissenting from prevailing views:

It leads them to suppose dominant views are so obviously correct that only a bigot or a crank could question them. Since no one wants to be, or be thought of, as a bigot or a crank, the easy, lazy way to proceed is simply by falling into line with campus orthodoxies. Don’t do that. Think for yourself.

They go on to explain what that means: “questioning dominant ideas,” and “deciding what one believes not by conforming to fashionable opinions, but by taking the trouble to learn and honestly consider the strongest arguments to be advanced on both or all sides of questions,” even arguments “for positions others revile and want to stigmatize” and “against positions others seek to immunize from critical scrutiny.”

Why?

Because in their view, “the central point of a college education is to seek truth and to learn the skills and acquire the virtues necessary to be a lifelong truth-seeker,” and “open-mindedness, critical thinking, and debate are essential to discovering the truth.”

Last year, the social psychologist Jonathan Haidt urged members of academic communities to declare whether their telos, or core mission, is seeking truth or advancing social justice, arguing that the way those missions are now defined makes it untenable for academic communities to treat both of them as “sacred values”:

Monday’s letter argues that “open-mindedness, critical thinking, and debate” are “our best antidotes to bigotry;” that a bigot is a person “who is obstinately or intolerantly devoted to his or her own opinions and prejudices;” and that the only people who need fear open-minded inquiry and robust debate “are the actual bigots, including those on campuses or in the broader society who seek to protect the hegemony of their opinions by claiming that to question those opinions is itself bigotry.”

The letter’s signatories are Paul Bloom, Nicholas Christakis, Carlos Eire, and Noël Valis at Yale; Maria E. Garlock, Robert P. George, Joshua Katz, Thomas P. Kelly, John B. Londregan, and Michael A. Reynolds at Princeton; and Mary Ann Glendon, Jon Levenson, Jacqueline C. Rivers, Tyler VanderWeele, and Adrian Vermeule at Harvard.

(New collegians seeking advice about the non-academic side of campus life might begin here.)