Leonardo da Vinci Quotes
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All bodies together, and each by itself, give off to the surrounding air an infinite number of images which are all-pervading and each complete, each conveying the nature, colour and form of the body which produces it.
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While I thought I have been learning how to live, I have been learning how to die.
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O admirable impartiality of Thine, Thou first Mover; Thou hast not permitted that any force should fail of the order or quality of its necessary results.
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To enjoy-to love a thing for its own sake and for no other reason.
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Men are in error when they lament the flight of time, accusing it of being too swift, and not perceiving that it is sufficient as it passes; but good memory, with which nature has endowed us, causes things long past to seem present.
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Where there is most power of feeling, there of martyrs is the greatest martyr.
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I ask how far away the eye can discern a non-luminous body, as, for instance, a mountain. It will be very plainly visible if the sun is behind it; and could be seen at a greater or less distance according to the sun's place in the sky.
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Those who are in love with practice without knowledge are like the sailor who gets into a ship without rudder or compass and who never can be certain whether he is going. Practice must always be founded on sound theory, and to this Perspective is the guide and the gateway; and without this nothing can be done well in the matter of drawing.
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The spirit has no voice, because where there is a voice there is a body, and where there is a body space is occupied, and this prevents the eye from seeing what is placed behind that space; hence the surrounding air is filled by the body, that is by its image.
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I ask at what part of its curved motion the moving cause will leave the thing moved and moveable.
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Truth here makes Falsehood torment lying tongues.
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Avoid studies of which the result dies with the worker.
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The Book of the science of Mechanics must precede the Book of useful inventions.
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The sun gives spirit and life to plants and the earth nourishes them with moisture.
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All the rays which convey the images of objects through the air are straight lines. Hence, if the images of very large bodies have to pass through very small holes, and beyond these holes recover their large size, the lines must necessarily intersect.
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Nothing is so much to be feared as Evil Report.
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A point is not part of a line.
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The function which the wing performs against the air when the air is motionless is the same as that of the air moved against the wings when these are without motion.
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Where there is most feeling, there is the greatest martyrdom.
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Since the wings are swifter to press the air than the air is to escape from beneath the wings the air becomes condensed and resists the movement of the wings; and the motive power of these wings by subduing the resistance of the air raises itself in a contrary movement to the movement of the wings.
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Movement will cease before we are weary of being useful.
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The outlines and form of any part of a body in light and shade are indistinct in the shadows and in the high lights; but in the portions between the light and the shadows they are highly conspicuous.
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Weight, force and casual impulse, together with resistance, are the four external powers in which all the visible actions of mortals have their being and their end.
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The smallest natural point is larger than all mathematical points, and this is proved because the natural point has continuity, and any thing that is continuous is infinitely divisible; but the mathematical point is indivisible because it has no size.