A sapient species doesn't reach space unless the members learn to cooperate.

After all, there were four sapient species on Earth for a long time.

"What then is your policy regarding worlds with another sapient species?"

In this you differ from no other sapient species.

Known space seems to be packed with sapient species.

Young Bands, like the youth of all sapient species, needed to be trained.

That includes the great majority of all sapient species.

A world older than Earth might have had time to father more than one sapient species.

They allow us to learn more about the only other sapient species ever found.

Don't you know what the local sapient species looks like?