This quote humorously points out that some individuals are so closed-minded or stubborn that no amount of evidence or reasoning will change their views. "No amount of evidence will ever persuade an idiot" humorously suggests that people with strong, irrational beliefs may remain resistant to logical arguments and evidence.
The quote serves as a reminder that it can be futile to try convincing certain individuals who are unwilling to consider alternative viewpoints or be open to new information.
It highlights the importance of engaging in constructive conversations with receptive and open-minded individuals, rather than wasting energy on those who are unyielding in their perspectives.