His real interest was epistemology--the theory of knowledge--which, like physics, was considered a branch of philosophy until Piaget came along and made it a science.
他的真正的兴趣在于认识论－知识的理论，这门学科就像物理学那样，一直被认为是哲学的一个分支，直到皮雅杰出来研究才将它变成了一门独立的科学。

Piaget was launched on a path that would lead to his doctorate in zoology and a lifelong conviction that the way to understand anything is to understand how it evolves.
从此皮雅杰走上了一条引导他获得动物学博士学位以及一个终生信念的道路，那就是：了解任何事物的方法就是要了解它是如何发展的。

Since Piaget, the territory has been widely colonized by those who write about women's ways of knowing, Afrocentric ways of knowing, even the computer's ways of knowing.
自从皮雅杰以来，这块领地已得到了那些撰写女性认知方式、非洲中心认知方式，甚至是计算机认知方式的作家们的广泛开拓。

Piaget explored a kind of epistemological relativism in which multiple ways of knowing are acknowledged and examined nonjudgmentally, yet with a philosopher's analytic rigor.
皮雅杰探索了一种认识论上的相对性，在这种相对性中，各种获知方式都得到承认，并给予不怀偏见的检验，当然还具有哲学家分析事物的严密性。