After reading oblomov's existentialist post...

...I feel I ought to contribute something equally meaningful.

Here's a toad excerpt from ‘The Wee Free Men’ by Terry Pratchett:

“Sometimes I wake up in the night and I think, was I ever really human? Or was I just a toad that got on her nerves and she made me think I was human once? That’d be a real torture, right? Supposing there’s nothing for me to turn back into?” The toad turned worried yellow eyes on her. “After all, it can’t be very hard to mess with a toad’s head, yeah? It must be much simpler than turning, oh, a one-hundred-and-sixty-pound human into eight ounces of toad, yes? After all, where’s the rest of the mass going to go, I ask myself? Is it just sort of, you know, left over? Very worrying. I mean, I’ve got one or two memories of being a human, of course, but what’s a memory? Just a thought in your brain. You can’t be sure it’s real. Honestly, on nights when I’ve eaten a bad slug, I wake up screaming, except all that comes out is a croak.”

Very deep stuff.