"It requires but a very small glance of thought to perceive, that although laws made in one generation often continue in force through succeeding generations, yet that they continue to derive their force from the consent of the living. A law not repealed continues in force, not because it cannot be repealed, but because it is not repealed; and the non repealing passes for consent."

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The ancients had little doubt about the true shape of the earth: "It's [the world's] shape has the rounded appearance of a perfect sphere. This is shown first of all by the name of 'orb' which is bestowed upon it by the general consent of mankind. ...Our eyesight also confirms this belief, because the firmament presents the aspect of a concave hemisphere equidistant in every direction, which would be impossible in the case of any other figure."

— Pliny the Elder