The proper study of mankind is the science of design.

The aim ... is to provide a clear and rigorous basis for determining when a causal ordering can be said to hold between two variables or groups of variables in a model . . . . The concepts refer to a model-a system of equations-and not to the 'real' world the model purports to describe.

Enlightenments, like accidents, happen only to prepared minds.

Creativity is no less challenging or exciting when the mystery is stripped from the creative process. The most beautiful flowers grow under careful cultivation from common soil.

A wealth of information creates a poverty of attention.

Learning is any change in a system that produces a more or less permanent change in its capacity for adapting to its environment.

No one has characterized market mechanisms better than Friedrich von Hayek