Found Notes

There's something mysterious about finding a note on a yellow slip (read: old-school message slip, that is thin, yellow paper, with one side saying in typewriter-like font:
Memorandum of Call
To:
_______________________

You were called by: You were visited by:

of (organization)
_____________________________________
-- Please Phone --- Is Waiting To See You
-- Will Call Again --- Wishes An Appointment
-- Returned Your Call

______________________________________

Message:

- quote from movie at begin.



___________________________________


OK, yes, that's as best as I could approximately copy it. And yes, the printing does say "Wishes An Appointment" on that line.

Anyhow, this folded, slightly torn and folded piece of paper turned up from the bottom of my backpack today, attaching itself to my notebook. God knows I have found many things (usually missing sections of Luna bars and sometimes half-melted bits of chocolate that are pretty gross and unexpected) but also good stuff, like important ID cards I had thought I'd lost for an entire week that suddenly re-emerged from the depths. So I was not totally surprised to find a simple piece of paper. The type of paper (see above) and the contents are more curious.

On the back of the paper in handwriting close to, but I've decided after scrutiny, is NOT mine is scrawled:

There once was a man
with theses
About the origin of
species.
He chartered a ship
And took a long trip
And went off to measure
their pieces.

Perhaps this was just a random piece of paper that a friend had written down a quote they liked from the beginning of a movie and somehow their note ended up in my backpack. But I'm wondering, what movie? Perhaps a movie about Darwin? Other european exploration?
And what did the person like so much about the quote to write it down in the moment?
I guess I could google the quote to see where it came from...
The other alluring thing is that I would do something like this- I often scribble down titles, lyrics of songs, random quotes, signs that I pass that spark me, etc, so it kinda strikes me if this is not my handwriting- whose observations are they? And where did they get the old-school message paper to scribble upon?

Yes, deep ponderings for tonight.