知ってのとおり、知られている知られているものがある；知っていることを知っているものごとがあるのだ。また、知られている知られていないものがあることも知っている；つまり、知らない何かがあることを知っているのだ。しかし、知られていない知られていないものもある――知らないことを知らないものごとだ。 - ドナルド・（ヘンリー・）ラムズフェルド (1932 - )
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As we know, there are known knowns; there are things we know we know. We also know there are known unknowns; that is to say, we know there are some things we do not know. But there are also unknown unknowns - the ones we don't know we don't know. - Donald (Henry) Rumsfeld (1932 - )
![IMAGE: Patriotism is your conviction that this country is superior to all others because you were born in it. [Patriotism: Your conviction that this country is superior to all other countries because you were born in it. / Patriotism is, fundamentally, a conviction that a particular country is the best in the world because you were born in it.]](https://www.ok312.net/wp-content/uploads/2025/10/ai-generated-9017144_640-100x67.jpg)
![IMAGE: Out of the mouth comes evil. [Out of the mouth proceeds evil.] / Better the foot slip than the tongue. / Keep your mouth shut and your eyes open.](https://www.ok312.net/wp-content/uploads/2015/06/man-70603_640-100x58.jpg)
![IMAGE: One for all, all for one. [All for one and one for all.]](https://www.ok312.net/wp-content/uploads/2019/10/team-1928848_640-100x67.jpg)