In an essay written when he left school, he noted that he would have enjoyed becoming a teacher, but he would only have been qualified to teach languages or the natural sciences, which were not his primary areas of interest.
在他离开学校时写的一篇文章中，他指出，他本可以很高兴地成为一名教师，但他只具备教授语言或自然科学的资格，而自然科学并非他的主要兴趣领域。