Charlatanism of some degree is indispensable to effective leadership.
— Eric Hoffer

The demand for certainty is one which is natural to man, but is nevertheless an intellectual vice. ... But so long as men are not trained to withhold judgment in the absence of evidence, they will be led astray by cocksure prophets, and it is likely that their leaders will be either ignorant fanatics or dishonest charlatans. To endure uncertainty is difficult, but so are most of the other virtues.
Bertrand Russell charlatans quote

Finding the occasional straw of truth awash in a great ocean of confusion and bamboozle requires intelligence, vigilance, dedication and courage. But if we don't practice these tough habits of thought, we cannot hope to solve the truly serious problems that face us - and we risk becoming a nation of suckers, up for grabs by the next charlatan who comes along.
— Carl Sagan

There's been a big buzz about the Charlatans in the last couple of years. I've heard the word Charlatans more in the last few years than I'd heard it for the previous 20 years. People would interview me for years and never even mention the Charlatans.
— Dan Hicks

Science is basically an inoculation against charlatans.
— charlatans quotation by Neil deGrasse Tyson