Aperture Science Stalemate Associate.
"You need to be a trained stalemate associate to press that button. You're unqualified."
I could've tried to find the actual font used in the Aperture logo, but at a glance the lettering looked too bold. Still tried to go for something - as Wheatley calls it - "Science-y," though!Yes you may download these!
Portal (c) Valve co.