Darwin’s weird. I feel like I always hear Marx had something good to say about someone and then later something bad. In Darwin’s case Marx and Engels sent a letter to Darwin saying his theory confirmed their dialectical materialist view, and later he said “it applies the social Victorian model to nature,” as in he projected English society on to natural laws. Similar with Lincoln. I guess this makes sense with a dialectical view where things like the theory of evolution have contradictions, good and bad. BTW, it is Herbert Spencer, not Charles Darwin who is credited with the phrase “the survival of the fittest.”