Dr. Brockton: This could be the one chance in a lifetime. Who knows? An opportunity to lift the veil from the past.
Sam Murdock: [to Trog, after having wrecked Dr. Brockton's laboratory] You know what they'll say? They'll say that Trog has a very nasty temper. But what can you expect from a slimy beast? Go ahead, missing link -- if that's what you are you should be missing. You bloody monster!
Dr. Brockton: We believe that Trog could be the connection between the creatures of early civilization and man as we know him today. This Troglodyte who somehow survived is a living reminder of what happened after our ancestors the apes left the forest, and first started to walk on hind legs, and take shelter in the caves.