“We live during the hinge of history. Given the scientific and technological discoveries of the last two centuries, the world has never changed as fast. We shall soon have even greater powers to transform, not only our surroundings, but ourselves and our successors. If we act wisely in the next few centuries, humanity will survive its most dangerous and decisive period. Our descendants could, if necessary, go elsewhere, spreading through this galaxy.”

— Derek Parfit , book Reasons and Persons

Source: Reasons and Persons (1984), p. 616

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Derek Parfit 24

British philosopher 1942–2017

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