If you can dream it, you can do it.

The method of psychology must be as exact as the methods of the natural sciences.

We live in a world where the past is always present, and the present is always haunted by the past.

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.