That may be true! But I think the writers have to agree on some basic values of his.
I don't think they do. As Gondolinian pointed out above, the Doctor has been known to kill the fat man on the trolley (sort of--I can think of situations where he lets them go to their doom, but not where he personally pulls the trigger). But the Doctor has also been known to refuse to kill the fat man on the trolley (as in Kill the Moon). I don't think the writers agree on anything more than "he does something weird or extreme that people like myself wouldn't do", and they're not consistent in which weird or extreme things those are.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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