Portal Quotes

Momentum, a function of mass and velocity, is conserved between portals. In layman's terms, speedy thing goes in, speedy thing comes out.

Did you know you can donate one or all of your vital organs to the Aperture Science self esteem fund for girls? It's true!

Remember, the Aperture Science 'Bring Your Daughter to Work Day' is the perfect time to have her tested.

Speaking of curiosity, you're curious about what happens after you die, right? Guess what? I know! You're going to find out first-hand before I can finish telling you, though, so I won't bother. I'll give you a hint: you're going to want to pack as much living as you possibly can into the next couple of minutes.