From Portal "Chell, what was working at Aperture like BEFORE GlaDos went all psycho-destruction on you guys? Or.... are you really an android, and never worked before?" 
you would never get an answer for two reasons. 1:he doesnt talk. 2:hes never had his first words.Soylent Bacon said:To Gordon Freeman: What was your first word?
I would simply ask Gordon freeman a question just to hear his voice... HO! what question... why is he doing what he is doing because we are never given a reason.Xpwn3ntial said:snip