He had very strong opinions on how this approach—which was most popularly implemented by the Bourbaki school in France—initially had a negative impact on French mathematical education, and then later on that of other countries as well.
他对法国布尔巴基学派最常用的这种方法——起初对法国的数学教育产生负面影响，后来影响了其他国家的数学教育——有着非常强烈的意见。