Longtermism, which treats fulfilling humanity's long-term potential as the overriding moral priority, is a worldview worth defending.

Recalls holdingI believe this needs to change because, as a former longtermist who published an entire book four years ago in defence of the general idea, I have come to see this worldview as quite possibly the most dangerous secular belief system in the world today.

Their words nowLongtermism might, in other words, be incompatible with the attainment of ‘existential security’, meaning that the only way to genuinely reduce the probability of extinction or collapse in the future might be to abandon the longtermist ideology entirely.