Quotes and aphorisms about common knowledge Ed Markey Patrick Leahy ,, That the Islamic State is guilty of horrific atrocities is common knowledge. But most Americans see... Tippi Hedren Marilu Henner James Lafferty Michael Seibel Alexandra Elbakyan Strom Thurmond Olga Tokarczuk ,, But the fact is we did have colonies in the east of Poland, we did have a slave economy there. But ... Samantha Ponder