Some people do indeed say that Eratosthenes could not have inferred the true measure of the earth. Whether true or untrue, it cannot affect the truth of what I have written on the fixing of the quarters from which the different winds blow.
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Chapter VI, Sec. 11Vitruvius
Let the directions of your streets and alleys be laid down on the lines of division between the quarters of two winds. On this principle of arrangement the disagreeable force of the winds will be shut out from dwellings and lines of houses. For if the streets run full in the face of the winds, their constant blasts rushing in from the open country, and then confined by narrow alleys, will sweep through them with great violence. The lines of houses must therefore be directed away from the quarters from which the winds blow, so that as they come in they may strike against the angles of the blocks and their force thus be broken and dispersed.
Vitruvius
All knowledge is local, all truth is partial. [...] No truth can make another truth untrue. All knowledge is part of the whole knowledge. A true line, a true color. Once you have seen the larger pattern, you cannot get back to seeing the part as the whole.
Ursula K. Le Guin
To find the directions and quarters of the winds your method of procedure should be as follows. In the middle of the city place a marble amussium, laying it true by the level, or else let the spot be made so true by means of rule and level that no amussium is necessary. In the very center of that spot set up a bronze gnomon or "shadow tracker." At about the fifth hour in the morning, take the end of the shadow cast by this gnomon, and mark it with a point. Then, opening your compasses to this point which marks the length of the gnomon's shadow, describe a circle from the center. In the afternoon watch the shadow of your gnomon as it lengthens, and when it once more touches the circumference of this circle and the shadow in the afternoon is equal in length to that of the morning, mark it with a point. From these two points describe with your compasses intersecting arcs and through their intersection and the centre let a line be drawn to the circumference of the circle to give us the quarters of south and north. ...and thus we have designed a figure equally apportioned among the eight winds.
Vitruvius
Sometimes you say things in songs even if there's a small chance of them being true. And sometimes you say things that have nothing to do with the truth of what you want to say and sometimes you say things that everyone knows to be true. Then again, at the same time, you're thinking that the only truth on earth is that there is no truth on it. Whatever you are saying, you're saying in a ricky-tick way. There's never time to reflect. You stitched and pressed and packed and drove, is what you did.
Bob Dylan
An untruth must be spoken, where need requires. For whether men lie, or say true, it is with one and the same object. Men lie, because they think to gain by deceiving others; and speak the truth, because they expect to get something by their true speaking, and to be trusted afterwards in more important matters. Thus, though their conduct is so opposite, the end of both is alike. If there were no gain to be got, your true-speaking man would tell untruths as much as your liar, and your liar would tell the truth as much as your true-speaking man.
Darius I of Persia
Vitruvius
Vitter, David
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