The one, where a giant robot comes and demands to be taken to the main lizards, as the world, where it was built is ruled by lizards that terribly repress the people of the planet. I'm quite sure it was in the last book of the series. You might be referring to another part, I guess.
(for those not in the know: the people of said planet cannot get rid of the lizards, despite fair elections, because only lizards are put forward as candidates. the Simpsons picked that idea up in one of their Treehouse of Horror episodes as well.)
Alright, I'll give you Lao Tzu (although there is a bit of difference between the two quotes), but Lichtenberg was a few decades before Lincoln.
I'll agree with that statement, although the quote is generally attributed to Lincoln, as most did not know who Baron von Lichtenstein was. The question then becomes, should we reward who came up with the idea first, or rather, who brought the idea to the masses?