The Notebooks of Leonardo da Vinci (1883), XV Astronomy
Context: The earth is not in the centre of the Sun's orbit nor at the centre of the universe, but in the centre of its companion elements, and united with them. And any one standing on the moon, when it and the sun are both beneath us, would see this our earth and the element of water upon it just as we see the moon, and the earth would light it as it lights us.
On the Infinite Universe and Worlds (1584)
This is how it has been understood by the great philosophers from Plato, the poet, to Nicolas of Cusa and other representatives of frigid scholasticism. Once this definition has been accepted, it gives rise to a series of important consequences. Love is power of producing inter-centric relationship. It is present, therefore (at least in a rudimentary state), in all the natural centres, living and pre-living, which make up the world; and it represents, too, the most profound, most direct, and most creative form of inter-action that it is possible to conceive between those centres. Love, in fact, is the expression and the agent of universal synthesis.
pp. 70–71 https://archive.org/stream/ActivationOfEnergy/Activation_of_Energy#page/n65/mode/2up
Activation of Energy (1976)
Theorem III
Monas Hieroglyphica (1564)
p, 125
On the Sizes and Distances of the Sun and the Moon (c. 250 BC)
“Let Rome be glorious on the earth,
The centre of Italian worth.”
Source: Translations, The Aeneid of Virgil (1866), Book XII, p. 472
Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 142.
Book 1, Proposition 4.
On the Equilibrium of Planes
Source: The Civilizing Process (1939), p. 477
