To know that we know what we know, and to know that we do not know what we do not know, that is true knowledge.
Heliocentric model of the solar system
A philosophical reflection on the nature of knowledge.
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"Yet because the novelty of the undertaking, which I knew to be contrary to the accepted views of the common people, might be regarded as absurd, I long hesitated."
Controversial"To know the mighty works of God, to comprehend His wisdom and majesty and power; to appreciate, in degree, the wonderful workings of His laws, surely all this must be a pleasing and acceptable mode of…"
Controversial"Therefore, I think that the earth is not the center of the universe, but rather the sun."
Controversial"The sphere of the fixed stars is immovable and embraces all things."
Controversial"For it is not the magnitude of the stars, but the magnitude of their distance from us, that causes them to appear small."
Strange & Unusual