Kant's Observations of 1764 and Remarks of 1764-5 (a set of fragments written in the margins of his copy of the Observations) document a crucial turning point in his life and thought. Both reveal the growing importance for him of ethics, anthropology and politics, but with an important difference. The Observations attempts to observe human nature directly. The Remarks, by contrast, reveals a revolution in Kant's thinking, largely inspired by Rousseau, who 'turned him around' by disclosing to Kant the idea of a 'state of freedom' (modelled on the state of nature) as a touchstone for his...