Here are some of his.
Explanations exist; they have existed for all time; there is always a well-known solution to every human problem—neat, plausible, and wrong.Prejudices: Second Series
We are here and it is now. Further than that, all human knowledge is moonshine.A Mencken Chrestomathy
I am suspicious of all the things that the average people believes.Opinion
All men are frauds. The only difference between them is that some admit it. I myself deny it.Gibberish