But biological explanations of human behaviour are making a comeback as the generation of academics that feared them as a covert way of justifying eugenics, or of thwarting Marxist utopianism, is retiring.

• 但是用生物学来解释人类行为的思潮正卷土重来，而那一代害怕这样做会暗中给优生学辩护或者阻挠马克思主义空想的学者已经退休了。