The empiric easily degenerates into the quack. He does not know where his knowledge begins or leaves off, and so when he gets beyond routine conditions he begins to pretend-to make claims for which there is no justification, and to trust to luck and to ability to impose upon others-to "bluff."
Interpretation
This quote warns against the pitfalls of relying solely on empirical knowledge without understanding its limits.
John Dewey highlights the dangers of empiricism when knowledge is not properly understood or contextualized. He warns that individuals who rely solely on empirical methods without deeper knowledge risk becoming quacks, making unwarranted claims that can mislead others. This emphasizes the need for critical thinking and a clear understanding of one’s knowledge boundaries in any field of study.
In practice
During a lecture on the importance of scientific methods, one might quote Dewey to reinforce the message about the limitations of empirical knowledge.
Every teacher should realize he is a social servant set apart for the maintenance of the proper social order and the securing of the right social growth. In this way, the teacher always is the prophet of the true God and the usherer-in of the true Kingdom of God.
Democracy has to be born anew every generation, and education is its midwife.
It science involves an intelligent and persistent endeavor to revise current beliefs so as to weed out what is erroneous, to add to their accuracy, and, above all, to give them such shape that the dependencies of the various facts upon one another may be as obvious as possible.
For in spite of itself any movement that thinks and acts in terms of an ‘ism becomes so involved in reaction against other ‘isms that it is unwittingly controlled by them. For it then forms its principles by reaction against them instead of by a comprehensive, constructive survey of actual needs, problems, and possibilities.
Any genuine teaching will result, if successful, in someone's knowing how to bring about a better condition of things than existed earlier.
The reactionaries are in possession of force, in not only the army and police, but in the press and the schools
Liberty cannot be guaranteed by law. Nor by any thing else except the resolution of free citizens to defend their liberties.
No such thing as a man willing to be honest - that would be like a blind man willing to see.
If I was bound for hell, let it be hell. No more false heaven. No more damned magic.
It is one of the beautiful compensations in this life that no one can sincerely try to help another without helping himself.
There is nothing to take a man’s freedom away from him, save other men.
They whose activity of imagination is often shifting the scenes of expectation, are frequently subject to such sallies of caprice as make all their actions fortuitous, destroy the value of their friendship, obstruct the efficacy of their virtues, and set them below the meanest of those who persist in their resolutions, execute what they design, and perform what they have promised.
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