Delenn: The third principle of sentient life is the capacity for self-sacrifice, the conscious ability to override evolution and self-preservation for a cause, a friend, a loved one.
Sins of the Fathers Chapter 9: Tombstone - S3-E9
Tombstone: Come down here and fight like a man.
Spider-Man: I don't suppose I could convince you to come up here and fight like a spider.
The Silver Surfer & the Coming of Galactus: Part 1 - S1-E5
Mr. Fantastic: Galactus must have seen us. Why didn't he say anything?
Uatu: Do you greet the cockroaches on your kitchen floor?
Alonzo Solace: It seems like Terrians, but it's not.
Morgan Martin: What's that supposed to mean? You seem coherent, but you're not.