Reading a book I received for my birthday, I found this:
The contemporary proliferation of bullshit also has deeper sources, in various forms of skepticism which deny that we can have any reliable access to an objective reality, and which therefore reject the possibility of knowing how things truly are.
One response to this loss of confidence has been a retreat from the discipline required by dedication to the ideal of correctness to a quite different sort of discipline, which is imposed by pursuit of an alternative ideal of sincerity.
It is as though he decides that since it makes no sense to try to be true to the facts, he must therefore try instead to be true to himself.
— Harry Frankfurt. On Bullshit Princeton University Press. 2005
The book is a short essay, the second half of which is excellent. Bullshit is a greater threat to truth that just lies, because a lie must at least acknowledge the existence of truth, bullshit doesn’t care at all.