Philosophers of science have repeatedly demonstrated that more than one theoretical construction can always be placed upon a given collection of data.

Far from being magisterial in its objectivity, science was conditioned by history, society, and the prejudices of scientists.

Under normal conditions the research scientist is not an innovator but a solver of puzzles, and the puzzles upon which he concentrates are just those which he believes can be both stated and solved within the existing scientific tradition.

Philosophers of science have repeatedly demonstrated that more than one theoretical construction can always be placed upon a given collection of data.

As in political revolutions, so in paradigm choice-there is no standard higher than the assent of the relevant community... this issue of paradigm choice can never be unequivocally settled by logic and experiment alone.

What a man sees depends both upon what he looks at and also upon what his previous visual-conceptual experience has taught him to see.

History, if viewed as a repository for more than anecdote or chronology, could produce a decisive transformation in the image of science by which we are now possessed.