He realized that this "teach-in" method would be a useful way for the public to express concern about the environment to federal and state officials.

VOA: special.2010.04.21

A good, hygienic way of doing this is, not only do I not go in and change things except through a pre-defined method, I shouldn't read it other Cartesian than through a pre-defined method.

做这个的方式是，我不仅仅要通过提前定义好的方法,来改变数值,我还应该通过提前定义好的方法，来读这个值,我应该用。

麻省理工公开课 - 计算机科学及编程导论课程节选