"There's coffee in that nebula" - Janeway, Voyager, episode The Cloud.
"My logic was not in error, but I was." - Tuvac, Voyager, episode Prime Factors.
"seventy sixth rule of acquisition, Every once in a while, declare peace....it confuses the hell out of your enemies." - Quark, DS9, can't remember the episode.
"At oh eight hundred hours, station time, the Romulan Empire formally declared war against the Dominion. They have already struck fifteen bases along the Cardassian border. So, this is a huge victory for the good guys. This may even be the turning point of the entire war. There's even a 'Welcome to the Fight' party tonight in the wardroom. So I lied, I cheated, I bribed men to cover the crimes of other men. I am an accessory to murder. But most damning thing of all, I think I can live with it. And if I had to do it all over again, I would. Garak was right about one thing. A guilty conscience is a small price to pay for the safety of the Alpha Quadrant, so I will learn to live with it. Because I can live with it. I can live with it." - Sisko, DS9, In he Pale Moon Light.