I love the slackware quotes o' the day. It's called something like Fortune Cookie. To find the file, I did:
locate fortune | less
or it could've been
whereis fortune | less
I can't recall exactly which and I'm not on my Slackbox ATM.
There weren't too many files with it, and you'll see which one it is by opening them one by one. It's got A LOT of sayings in the file. I'm not sure which command calls them up at start, but I can at least point you to the file on your system that's got them so you can read them all if you want. You might also be able to copy the file from one system to another so you can read them from the system that doesn't have them. Do a search here at LQ Slack Forum as I remember seeing a thread that showed how to diable the fortune from coming up. Once you know what to disable, you'll know what you need to install, or at least enable. Hope this helps.