Noun
The acts, arts, or boastful pretensions of a quack; false pretensions to any art; empiricism.
Source: Webster's dictionaryThere are few things in which we deceive ourselves more than in the esteem we profess to entertain for our firends. It is little better than a piece of quackery. The truth is, we think of them as we please, that is, as they please or displease us. William Hazlitt
Pessimism: A valuable protection against quackery. John Ralston Saul
The man who blames the supreme certainty of mathematics feeds on confusion, and can never silence the contradictions of sophistical sciences which lead to an eternal quackery. Leonardo da Vinci
The church is a sort of hospital for men's souls and as full of quackery as the hospital for their bodies. Henry David Thoreau
I am as non-accepting of medical quackery and unscientific approaches as anybody else. I've grown up as a card-carrying scientist, and I know the power of science to answer questions, and for many questions I don't know of anything better than scientific approaches to answer them. Dean Ornish
Quackery has no friend like gullibility. Traditional Proverb