It would seem to me that by the time a race has achieved deep space capability it would have matured to a point where it would have no thought of dominating another intelligent species.
Clifford D. SimakWe came into a homeless frontier, a place where we were not welcome, where nothing that lived was welcome, where thought and logic were abhorrent and we were frightened, but we went into this place because the universe lay before us, and if we were to know ourselves, we must know the universe
Clifford D. SimakMuch of what we see in the universe ... starts out as imaginary. Often you must imagine something before you can come to terms with it.
Clifford D. SimakHere lies one from a distant star, but the soil is not alien to him, for in death he belongs to the universe.
Clifford D. Simak