Star Trek The Original Series episode “This Side of Paradise”. Mr. Spock has been affected by spores that release his emotional side. He and his love interest Leila Kalomi are looking at clouds.
Spock: That one looks like a dragon. You see the tail and the dorsal spines?
Leila: I’ve never seen a dragon.
Spock: I have. On Berengaria 7. But I’ve never stopped to look at clouds before. Or rainbows. I can tell you exactly why one appears in the sky, but considering its beauty has always been out of the question.
From TVtropes:
Sigh.
I know! Is the world not more beautiful when one can understand how it works?