[Johnson, Ellen Halda, American Artists on Art: From 1940 to 1980, August 1, 1982, Westview Press, ISBN 0064301125, p. 192]
“If I had as clear an idea of ghosts, as I have of a triangle or a circle, I should not in the least hesitate to affirm that they had been created by God; but as the idea I possess of them is just like the ideas, which my imagination forms”
Letter to Hugo Boxel (Oct. 1674) The Chief Works of Benedict de Spinoza (1891) Tr. R. H. M. Elwes, Vol. 2, Letter 58 (54).
Context: If I had as clear an idea of ghosts, as I have of a triangle or a circle, I should not in the least hesitate to affirm that they had been created by God; but as the idea I possess of them is just like the ideas, which my imagination forms of harpies, gryphons, hydras, &c., I cannot consider them as anything but dreams, which differ from God as totally as that which is not differs from that which is.<!--pp. 382-383
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Baruch Spinoza 210
Dutch philosopher 1632–1677Related quotes

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What I Believe (1938)
Source: What I Believe and Other Essays
J. C. Ward, Memoirs of a Theoretical Physicist (Optics Journal, Rochester, 2004).

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AP via CBS News https://web.archive.org/web/20150906180820/https://www.cbsnews.com/news/prince-faces-press/
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Interview, Life Magazine (New York, March 14, 1960).
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1921 - 1930

Answers for Young People http://www.w3.org/People/Berners-Lee/Kids.html