I think the thread title says it all.

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"The Greatest enemy of knowledge is not ignorance, it is the illusion of knowledge." -Stephen Hawking
"First they came for the communists, and I did not speak out— because I was not a communist;
Then they came for the socialists, and I did not speak out— because I was not a socialist;
Then they came for the trade unionists, and I did not speak out— because I was not a trade unionist;
Then they came for the Jews, and I did not speak out— because I was not a Jew;
Then they came for me— and there was no one left to speak out for me." -Martin Niemöller