Eric: You know, this whole marriage thing has made me think. Why am I in such a hurry to grow up? You know, life, it's like a train. It's bearing down on you, and guess what? It's gonna hit you. So you can either start running when it's far off in the distance, or you can pull up a chair, crack open a beer, and just watch it come.
Kelso: I did that once.
Eric: No, Kelso, not a real train. A metaphorical one.
Kelso: Like a... Like a ghost train?
Eric: Yes. A ghost train.