Well, as discussed in a recent blog post by FIRE (see below for link) it seems that a slight modification of this classic quote could be applied to the state of many university students today: 'All students are equal, but some students are more equal than others.'
Duke University professor Michael Munger in a recent talk discussed how in the modern university classroom it seems many professors fail to challenge liberal students, and even thought there is much talk about discrimination against conservative students (and research to substantiate these claims...results reflected in some of my work as well), he argues that counterintuitively conservatives may be benefiting from classrooms dominated by liberal professors and the disparaging of their views.
While the climate may not always be friendly, and the ostracizing of viewpoints (in general non-liberal viewpoints) counterproductive to science and limiting for students interests and advancements, the opportunity for conservative students to interact with professors that don't share their opinions poses an opportunity to think critically, engage in debate, all the while helping the conservative students better understand what they believe, why, and how to best articulate these beliefs. Liberal students, on the other hand, are often viewed as "already having it right," and as such, Munger argues, just skirt on through. Success outside of school relys heavily on being able to interact and engage in discussion with different people that hold sometimes extremely different opinions. If many students aren't learning how to do this the long-term consequences will be catastrophic.
An education is often most valuable when students are forced to engage with ideas that aren't their own, and opinions they don't agree with. Now, in many situations within universities this is not handled in the best way as many students fear challenging or engaging in a discussion with professors who hold different views than their own out of fear of retaliation (e.g. a poor grade on an assignment or in the class).
The blog post by FIRE linked below, along with the original article by Munger linked below pose some fantastic things to think about regarding this topic.
Much of my research this far has been within the field of political diversity and political discrimination, and my research along with a lot of research by others has show that the university climate is typically stacked against and hostile toward conservatives (or broadly political minorities depending on what area of the university you are looking at). My research along with research by others has, unfortunately, put forth some not so positive data describing some not so positive situations conservatives (students and faculty) face. It is enlightening to hear another perspective putting forth the idea that perhaps there are some benefits to the situation, and that there is always more than one side/perspective to be considered.