Frick was born in Knonau, the son of a travelling salesman.

He served a year in prison (1912-1913) for his involvement in liberating a Russian anarchist from incarceration in Zurich.

From 1911, he lived with Frieda Gross-Schloffer, wife of psychoanalyst Otto Gross, then from 1920, with photographer Margarethe Fellerer, whom he married in 1941.

He became a painter at the urging of Artur Segal, and published essays on archaeology and the history of language.

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