Radim was born in 1963.
He grew up in a Catholic family but is now an active member of the Seventh-day Adventist Church.
He completed grammar school in the school on Přípotoční Street in Prague 10. His favorite subjects were physical training, math, and geography.
He started studying at the Faculty of Civil Engineering at the Czech University of Technology in Prague before the fall of communism, but he did not complete his studies.