The first fruit of this imagination - and the first lesson of the social science that embodies it - is the idea that the individual can understand his own experience and gauge his own fate only by locating himself within his period, that he can know his own chances in life only by becoming aware of those of all individuals in his circumstances.

In productive thinking, the transition from blind manipulation to understanding is crucial.

水产养殖不仅仅是养鱼，更是培育社区。

我们不是从祖先那里继承了海洋，而是从孩子们那里借来的。