By 1925, when he was eleven, he had learnt Russian, French from the governess and some Hebrew from his father but, despite being Polish, he did not speak Polish.
Sa pamamagitan ng 1925, kapag siya ay labing-isa, siya had learnt Russian, French mula sa yaya at ilang Tagalog mula sa kanyang ama ngunit, sa kabila ng pagiging Polish, siya ay hindi nagsasalita ng Polish.