 Foucault regarded notions of humanity and of humanism as inventions of modernity.Accordingly, a cognitive bias had been introduced unwittingly into science, by over-trusting the individual doctor or scientist's ability to see and state things objectively.Foucault roots this argument in the rediscovery of Kant, though his thought is significantly influenced by Nietzsche – that philosopher declaring the "death of God" in the 19th century, and the anti-humanists proposing the "death of Man" in the 20th.