In emacs in the Terminal (the Unix app), there’s a vaguely amusing AI program named ELIZA. You can read more about the program here. While it gets boring to talk to after a minute or two, you can always hope that if you begin with the insults and some inanity of your own, you can be rewarded with great quotes like these:

Good stuff. If you haven’t experienced ELIZA, go to Terminal, type emacs, hit Enter, and then hit Shift+Esc. Type xdoctor and press Enter. Ctrl+x and then Ctrl+c will get you back to the Terminal.