Idealism denies objective knowledge and makes God a creation of the intellect.

Evidence

For Catholics ”… the whole theory of idealism is based on the denial of the objectivity of all our knowledge and on the idealistic monism of ‘spirit’ (a monism which, as such, is equivalent to the positivistic monism of ‘matter’). In this conception, the very foundation of religion, God, does not exist objectively outside of ourselves, but is a creation of the intellect. Idealism, therefore, no less than materialism, is radically contrary to religion.” — Antonio Gramsci, Selections from the Prison Notebooks, 1322

Categorization

  • XREF: Documents how Catholicism’s own critique of idealism located monism of spirit as equivalent to monism of matter; useful for the religion-vs-immanence theme running under later secularism critiques. — connects to: God is the hypostasized ideal of the impossible self-synthesis — Jean-Paul Sartre, Being and Nothingness: An Essay on…, 363; Idealism’s failure to prove the Other’s existence collapses into metaphysical realism.; Theologians object that subjecting God to the concept denies his creative freedom (+1 more)