language is an ability, inherent in us. we can know the ability only through studying the actual languages. thus, one of the best reasons for studying languages is to find out about ourselves, about what makes us persons. and the best place to start such study is with our own language. then what would be the good way to study a language? the best approach is the historical one.

위문장에서 with는 어떤 역할인건가요..?