The X-Files, Season 2

Mulder:
Have you ever been to San Diego?

Scully:
Yeah.

Mulder:
Did you check out the Palomar observatory?

Scully:
No.

Mulder:
From 1948 until recently, it was the largest telescope in the world. The idea and design came from a brilliant and wealthy astronomer named George Ellery Hale. Actually, the idea was presented to Hale one night. while he was playing billiards, an elf climbed in his window and told him to get money from the Rockefeller Foundation for a telescope.

Scully:
And you're worried that all your life, you've been seeing elves?

Mulder:
In my case... little green men.

Scully:
But, Mulder... during your time with the X-Files, you've seen so much.

Mulder:
That's just the point. Seeing is not enough, I should have something to hold onto. Some solid evidence. I learned that from you.