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.

The only fence against the world is a thorough knowledge of it.

我们都是我们风景的产物；它决定了行为，甚至思想，取决于我们对它的反应程度。

Technology should serve people, not control them.