Philosophy, in spite of all its tiresome features, is not a luxury but a necessity, because we always have to use it when things get difficult. - Mary Midgley

Selection does not work by cutthroat competition between individuals, but by favouring whatever behavior is useful to the group. People with crude notions of "Darwinism" make an intriguing blunder here. They refuse the mere fact of competing, that is, of needing to share out a resource with the motive of competitiveness or readiness to quarrel.

Scientism exalts the idea of science on its own, causing people to become fixated on the assumptions that seemed scientific to them during their formative years. This prevents them from seeing contrary facts, however glaring they may be, that have been noticed more lately.

The symbolism of meat-eating is never neutral. To himself, the meat-eater seems to be eating life. To the vegetarian, he seems to be eating death. There is a kind of gestalt-shift between the two positions which makes it hard to change, and hard to raise questions on the matter at all without becoming embattled.