To me it seems that those sciences are vain and full of error which are not born of experience, mother of all certainty, first-hand experience which in its origins, or means, or end has passed through one of the five senses. And if we doubt the certainty of everything which passes through the senses, how much more ought we to doubt things contrary to these senses — ribelli ad essi sensi — such as the existence of God or of the soul or similar things over which there is always dispute and contention. And in fact it happens that whenever reason is wanting men to cry out against one another, which does not happen with certainties. For this reason we shall say that where the cry of controversy is heard, there is no true science, because the truth has one single end and when this is published, argument is destroyed for ever. . Leonardo Da Vinci
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More Quotes By Leonardo Da Vinci
  1. All our knowledge has its origin in our perceptions
  2. Our life is made by the death of others.
  3. A painter should begin every canvas with a wash of black, because all things in nature are dark except where exposed by the light.
  4. Once you have tasted flight, you will forever walk the earth with your eyes turned skyward, for there you have been, and there you will always long to return.
  5. All sciences are vain and full of errors that are not born of Experience, the mother of all Knowledge.
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