Not to take away from W. O.'s incoming reply, only two points: First, as I already pointed out, Darwin first used "natural selection," which he meant to be a descriptive / explanatory, not a prescriptive / ethical principle. Only later under the Spencerian influence he introduced the term "the survival of the fittest" where a certain positive evaluation of those who survive intrudes. Still, to predict that, in conditions of limited resources, "only the fittest shall survive" does not necessarily state that in ethical terms this ought to be so, although it may carry implications to the ethical argument. So I guess that we are considering whether "only the fittest ought to survive" could be accepted as an ethical maxim. Second, the contradiction that is meant here is clearly the 'practical contradiction' in Kantian terms, not the logical contradiction. Even so, I agree with R.P. in that I don't think there would be any contradiction standing in the way of making this a universal maxim. Consider sports: "Only the fittest shall survive in competition" seems to function pretty well as a guiding maxim in (at least, most) sports. What would be considered unfair or unethical in this context would be if, because of some external interference or unequal conditions, the fitter side were not allowed to win. (We still talk about FIDE's intervention in the Karpow-Kasparov match, though it's not actually clear which side benefitted from this.) O.K. ------------------------------------------------------------------ To change your Lit-Ideas settings (subscribe/unsub, vacation on/off, digest on/off), visit www.andreas.com/faq-lit-ideas.html