Can you give a one-sentence commencement speech?

Thanks go to PostSecret for the idea. Last week, I attended the graduation at the high school where I teach, and it’s been on my mind recently. So many commencement speeches are too long to hold interest, and the advice could often been distilled into just one sentence. So what would you say? If you could give the speech in just one sentence, what advice do you give to the flutherites who are graduating, whether from high school, college, or a post-graduate program?