Battlestar Galactica, Season 3

Adama:
When you stand o­n this deck, you be ready to fight, or you dishonor the reason why we're here. Now remember this: When you fight a man, he's not your friend. Same goes when you lead men. I forgot that o­nce. I let you get too close. All of you. I dropped my guard. I gave some of you breaks, let some of you go, before the fight was really over. I let this crew and this family disband. And we paid the price in lives. That can't happen again.