While Alfred Russel Wallace is sometimes remembered for his sympathy for ‘savages’, it has also been observed that he was closely associated with European colonial regimes during his long stint of fieldwork in Southeast Asia (1854–62). Moreover, it has been argued that as one of the first scientists to extend natural selection to humans following his return to Britain he acquiesced in the extinction of primitive peoples. This article examines in detail for the first time the development of Wallace's admiration for the Dutch Cultivation System, which combined paternalistic administration with a government monopoly over the production of cash crops. While travelling through the archipelago Wallace encountered numerous examples of Indo-Dutch creole culture and he himself made significant lifestyle adaptations to local practices. When he first observed the Cultivation System in the Minahasa region of northern Sulawesi Wallace experienced an epiphany as he witnessed the rapid progress towards ‘civilization’ made by former ‘savages’. This, he attributed to the Dutch system, which he believed to be well adapted to the principles of human mental and moral development. In advocating the Dutch model as a preferable alternative to British free trade and neglect of its civilising mission in India, Australia, and elsewhere, Wallace hoped not only to arrest the decline of primitive societies but also to promote the ultimate uniting of humankind in a single race. In the context of debates over human evolution, slavery, race, and imperial policy in Britain in the 1860s, this was an unusual and radical stance, which challenges simplistic representations of Wallace as a supporter of empire around mid-century who moved towards anti-imperialism in the late Victorian period.