Quote from Alex in Commencement
Alex: If mathematics doesn't matter, then no one can be certain of anything, and I've just wasted the last four... no, sixteen years of my life, and there's no point in me graduating!
Claire: Okay, I can tell that you're very upset, and you're probably really overtired from finals. But you are gonna regret it if you don't go to graduation. Look, I promise, whatever is bothering you, figure it out after the ceremony...
Alex: "After" implies "before"! But if one minute ago is the same as zero minutes ago, then before is now and now is after!
Haley: Usually when I hear people talking like this, we're walking through a Taco Bell drive-through.