"The person who imagined that he could not be the victim of propaganda because he could distinguish truth from falsehood, is extremely susceptible to propaganda, because when propaganda does tell the truth, he is then convinced that it is no longer propaganda: moreover, his self-confidence makes him all the more vulnerable to attacks of which he is unaware."

Previous Quote

As time goes on, I get more and more convinced that the right method in investment is to put fairly large sums into enterprises which one thinks one knows something about and in the management of which one thoroughly believes. It is a mistake to think that one limits one's risk by spreading too much between enterprises about which one knows little and has no reason for special confidence. . . . One's knowledge and experience are definitely limited and there are seldom more than two or three enterprises at any given time in which I personally feel myself entitled to put full confidence.

— John Maynard Keynes