In order to arrive at knowledge of the motions of birds in the air, it is first necessary to acquire knowledge of the winds, which we will prove by the motions of water in itself, and this knowledge will be a step enabling us to arrive at the knowledge of beings that fly between the air and the wind.
Leonardo da Vinci0
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Leonardo da Vinci:
Knowledge of the past and of the places of the earth is the ornament and food of the mind of man.Leonardo da Vinci:
How many emperors and how many princes have lived and died and no record of them remains, and theyLeonardo da Vinci:
Just as food eaten without appetite is a tedious nourishment, so does study without zeal damage theLeonardo da Vinci:
Necessity is the mistress and guide of nature. Necessity is the theme and inventress of nature, herLeonardo da Vinci:
To such an extent does nature delight and abound in variety that among her trees there is not one pLeonardo da Vinci:
Man and animals are in reality vehicles and conduits of food, tombs of animals, hostels of Death, cLeonardo da Vinci:
Just as courage is the danger of life, so is fear its safeguard.Leonardo da Vinci:
I have always felt it is my destiny to build a machine that would allow man to fly.Leonardo da Vinci:
Tears come from the heart and not from the brain.Leonardo da Vinci:
The natural desire of good men is knowledge.