He spent his childhood and youth in Austria and Germany, studied with Russell in Cambridge from 1911 to 1914 and worked again in Cambridge (with some interruptions) from 1929 to 1947.

• 他的童年和青少年时期是在奥地利和德国渡过的，从1911年到1914年他在剑桥跟随罗素学习，并且从1929年到1947年重返剑桥工作（这期间有些中断）。