"... it is too narrow for that."

In a 1953 letter, Wolfgang Pauli related to Carl Jung a comment that Ernst Mach had made, some decades earlier, regarding Freudian psychoanalysis:

"These people try to use the vagina as if it were a telescope so that they can see the world through it. But that is not its natural function – it is too narrow for that."

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Source: "137: Jung, Pauli, and the pursuit of a scientific obsession" by Arthur I. Miller.