The dynamo is one of the great factors of modern civilization, and its potential name, like that of dynamite, rightly defines its character. Edward W. Byrn.十九世纪发明进展.
Hanging on the tail of a kite it photographs the face of mother earth, and, acting quicker than the lightning, it catches and defines the path of that erratic flash. Edward W. Byrn.十九世纪发明进展.
For method defines the kind of organization in virtue of which science is science. 约翰·杜威.民主与教育.