Humanists argue for assigning the highest moral status to all humans over any non-humans directly or indirectly on the basis of uniquely superior human cognitive abilities. They may also claim that humanism is the strongest position from which to combat racism, sexism, and other forms of within-species discrimination. I argue that changing conceptual foundations in comparative research and discoveries of advanced cognition in many non-human species reveal humanism's psychological speciesism and its similarity with common justifications of within-species discrimination. Introduction. Humanism in moral philosophy is a view of moral status that "insists on the equal and distinctive worth of human beings over non-human animals" (Setiya 2018: 452). 2 Humanists have 1 Acknowledgements: For helpful comments and questions on versions of this paper as it evolved, I would like to thank audiences at the Beyond Anthropocentric Psychology invited symposium at the Philosophy of Science Association annual meeting in November 2018 and at my University of Sydney Philosophy Department colloquium talk in October 2019, and to extend particular appreciation to Paul Griffiths, members of his Theory and Method in Biosciences research group, and students in my Anderson Fellowship seminar in (southern hemisphere) spring 2019 at the University of Sydney; to Hannah Tierney; and to two anonymous reviewers for this journal. 2 While I will use Setiya's perspicuous label, Bernstein (2017) calls this view "hierarchism", and Jaworska and Tannenbaum (2018) simply call the humans-only high status "full moral status". Others define the same position indirectly. Varner (2012) defends a concept of personhood in which individuals with certain cognitive and experiential capacities deserve special respect, and no non-humans have these capacities (though some qualify as near-persons); a parallel label in these terms might be "personism". In DeGrazia's terms (1996: 46), given that an ethical theory that did not affirm an equal consideration principle for humans "would yield distinct moral statuses among humans", humanism is equivalent to affirming equal consideration for humans only. An EC principle (e.g. Singer 1975) holds that one must give equal moral weight to relevantly similar interests of different individuals. This humanism is distinct from secular humanism, "a democratic and ethical life stance" in which humans give meaning to their lives using reason and science, eschewing belief in a supreme supernatural being (https://humanists.international/what-ishumanism/). These humanisms are compatible but logically independent: one can be a moral-status humanist and hold that our higher moral status over animals stems from our greater similarity to