On Tyranny by Timothy Snyder

Avoid pronouncing the phrases everyone else does. Think up your own way of speaking, even if only to convey that thing you think everyone is saying. Make an effort to separate yourself from the internet. Read books.

VICTOR KLEMPERER, A literary scholar of Jewish origin, turned his philological training against Nazi propaganda. He noticed how Hitler's language rejected legitimate opposition: The people always meant some people and not others (the president uses the word in this way), encounters were always struggles (the president says winning), and any attempt by free people to understand the world in a different way was defamation of the leader (or, as the president puts it, libel).