Think very, very loudly, so the rest of us can hear.
There is now video of PZ Myers' eloquent commencement address to the new graduates of the Keck School of Medicine of USC. The last lines are the kind of thing one expects to see someday in a book of famous quotes:
You are graduates of an institution that encourages you to think for yourself. I want you all to continue doing that. And what's more, I want you all to think very, very loudly, so the rest of us can hear.