Source: Irrational Man: A Study in Existential Philosophy (1958), Chapter Nine, Heidegger, p. 187
“Speculative philosophy as the realisation of God is the positing of God, and at the same time his cancellation or negation; theism and at the same time atheism: for God – in the sense of theology – is God only as long as he is taken to be a being distinguished from and independent of the being of man as well as of nature. The theism that as the positing of God is simultaneously his negation or, conversely, as the negation of God equally his affirmation, is pantheism. Theological theism – that is, theism properly speaking – is nothing other than imaginary pantheism which itself is nothing other than real and true theism.”
Part I, Section 14
Principles of Philosophy of the Future http://www.marxists.org/reference/archive/feuerbach/works/future/index.htm (1843)
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Ludwig Feuerbach 36
German philosopher and anthropologist 1804–1872Related quotes

“Pantheism is sexed-up atheism. Deism is watered-down theism.”
Source: The God Delusion (2006), p. 40

"No More Stress or Tension" in Plus : The Magazine of Positive Thinking (May 1986), p. 22

The Philosophy of Atheism (1916)

“This is the negation of God erected into a system of Government.”
A letter to the Earl of Aberdeen, on the state prosecutions of the Neapolitan government (7 April 1851), p. 9.
1850s

Source: The Limits of Evolution, and Other Essays, Illustrating the Metaphysical Theory of Personal Ideaalism (1905), Modern Science and Pantheism, p.58

Part I, Section 16
Principles of Philosophy of the Future http://www.marxists.org/reference/archive/feuerbach/works/future/index.htm (1843)