Star Trek: Voyager1995

[Janeway tells Seven a story about a fight during a border conflict with the Cardassians]

Captain Kathryn Janeway:
One night, during a break in the fighting, we could hear this low, moaning sound, coming from somewhere in the brush. We knew that none of our people were out there, so it had to be a wounded Cardassian. You have to understand, we've been killing each other for weeks on this planet. It was brutal. But our commanding officer decided... that we couldn't just sit there and listen to that poor man suffer. So he ordered me and an ensign to crawl out there and bring that Cardassian back to our camp. I thought he was crazy. He was risking our lives for someone who would have shot us without hesitation. But we did it. And the Cardassian lived. Three days later, we secured the outpost. It was a major victory; we were all decorated by Starfleet Command. But in retrospect, the thing I'm most proud of was the night we saved that man's life.

Seven of Nine:
Explain.

Captain Kathryn Janeway:
A single act of compassion can put you in touch with your own humanity.