One began at last to see that a great many impressions were needed to make very little education, but how many could be crowded into one day without making any education at all, became the pons asinorum of tourist mathematics.

一个人终于开始明白， 需要大量的印象来进行很少的教育， 但是一天可以挤进多少人而不进行任何教育， 成为旅游数学的脑瘤。