The Wisdom of Leonardo da Vinci by Leonardo da Vinci

Author:Leonardo da Vinci [da Vinci, Leonardo]
Language: eng
Format: azw3
Tags: ebook, book
Publisher: Philosophical Library/Open Road
Published: 2010-09-07T04:00:00+00:00

Among the forces that work harm on man’s goods, streams with their powerful and furious inundations appear to me to take first place.

Anyone who tried to set fire above the fury of ruinous streams would seem to me to be lacking in good judgment, for fire comes to an end and dies whenever it lacks nutriment. But against the irreparable inundations of swollen and raging streams no device contrived by man avails; turbulent and tumultuous streams tear at and destroy their high banks, rage through the lands under cultivation, ruin houses, uproot tall trees which they carry as booty to the sea, their resting place. Flooding dikes and every other bulwark, they carry away men, plants, beasts, towns, and property.

They carry away light objects and ruin and destroy heavy ones, making of small fissures great ravines, filling deep valleys with their overflow, and rushing ever onward with their harsh, noxious waters. (C. A. 361 v.)

The Effects of the Air

When force creates a motion faster than the resistance of the movement of air, then the air condenses in much the same way as the feathers that are pressed together and compacted by the sleeper’s weight; and the thing that presses against the air, finding it resistant, rebounds in the same way as a ball thrown against a wall. (Triv. 6 v.)

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