Here's the new thread for posting quotes, with the usual rules:
Please post all quotes separately, so that they can be voted up/down separately. (If they are strongly related, reply to your own comments. If strongly ordered, then go ahead and post them together.)
Do not quote yourself
Do not quote comments/posts on LW/OB
No more than 5 quotes per person per monthly thread, please.
The only relevant difference that I can see is that, in the first paragraph, the solutions are explicitly limited to the rational numbers; in the second case, the solutions are not explicitly limited to the reals.
Here's the new thread for posting quotes, with the usual rules: