Leonardo Da Vinci (1452–1519) Italian Renaissance polymath
The Notebooks of Leonardo da Vinci (1883), I Prolegomena and General Introduction to the Book on Painting
Perspectiva communis, translated by, and appearing in the notebooks (C.A.<sub>543r</sub>) of Leonardo da Vinci, as quoted by Martin Kemp, Leonardo Da Vinci: The Marvellous Works of Nature and Man (2006) p. 112.
Context: Among all the studies of natural causes and reasons, light most delights the contemplators; among the great things of mathematics, the certainty of its demonstrations most illustriously elevates the minds of its investigators; perspective must therefore be preferred to all human discourses and disciplines, in the study in which radiant lines are expounded by means of demonstrations and in which the glory is found not only of mathematics, but also physics: it is adorned with the flowers of one and the other.
Leonardo Da Vinci (1452–1519) Italian Renaissance polymath
The Notebooks of Leonardo da Vinci (1883), I Prolegomena and General Introduction to the Book on Painting
William Penn (1644–1718) English real estate entrepreneur, philosopher, early Quaker and founder of the Province of Pennsylvania
9
Fruits of Solitude (1682), Part I
Stephen Jay Gould (1941–2002) American evolutionary biologist
Source: The Mismeasure of Man (1996), p. 272
Isaac Newton book Opticks, or a Treatise of the Reflections, Refractions, Inflections and Colours of Light
Query 30 : Are not gross bodies and light convertible into one another, and may not bodies receive much of their activity from the particles of light which enter into their composition?
Opticks (1704)
“Sun is the reason
And the world it will bloom
‘Cause sun lights the sky
And the sun lights the moon”
Cat Stevens (1948) British singer-songwriter
Sun C79
Song lyrics, Buddha and the Chocolate Box (1974)
“I contemplate its beauty with incredible and ravishing delight”
Johannes Kepler (1571–1630) German mathematician, astronomer and astrologer
Vol. VI, p. 116, Vol. VIII, p. 266ff.
Joannis Kepleri Astronomi Opera Omnia, ed. Christian Frisch (1858)
Context: I certainly know that I owe it [the Copernican theory] this duty, that as I have attested it as true in my deepest soul, and as I contemplate its beauty with incredible and ravishing delight, I should also publicly defend it to my readers with all the force at my command.
Meister Eckhart (1260–1328) German theologian
Sermon VII : Outward and Inward Morality
Meister Eckhart’s Sermons (1909)
Aristotle book Metaphysics
Book I, 980a.21: Opening paragraph of Metaphysics
The first sentence is in the Oxford Dictionary of Scientific Quotations (2005), 21:10
Metaphysics
Variant: All men by nature desire knowledge.
John Dalberg-Acton, 1st Baron Acton (1834–1902) British politician and historian
As quoted in Essays on Freedom and Power, Introduction, p. xlvii (1949) https://mises.org/sites/default/files/Essays%20on%20Freedom%20and%20Power_3.pdf