Shepard: I thought you always needed another species to serve as one of the parents. Liara: Think about it, Shepard. If we were not able to mate with our own species, we would havedied out long before we ever mastered space flight and left our homeworld.
1945 January and February, A Former Pupil, “Some Memories of Crewe Works—III”, inRailway Magazine, page14:
However, apart from all this, the Chief was a grand old man, belonging to a class of individualists which seems to bedying out in these days, when standard behaviour seems to be as prevalent as standard designs.