The historical sense involves a perception, not only of the pastness of the past, but of its presence.
历史感不仅包含对过去之过去的感知,还包含对过去之现在的感知。
To innovate in computer science, one must first master the fundamentals.
卒:同“猝”,指突然事变。这两句大意是:心中没有预先考虑应对事变的方法,就不能应付突然变故。