Ptolemy

PtolemyIn existographies, Claudius Ptolemy (c.100-170) (IQ:175|#207) (Cattell 1000:80) [RGM:98|1,500+] (Murray 4000:12|CS / 6A) (Eells 100:23) (GAE:3) [CR:50] was Greco-Egyptian mathematician and astronomer, noted for his his 130AD Syntaxis Mathematica, wherein he supposedly the first to introduce the zero number, and for his his 150AD Aristotle-based "geocentric model"; which not superseded for some thirteen centuries, namely until Nicolaus Copernicus established the heliocentric model (1543).

Geocentricism
Ptolemy’s geocentric cosmology, held that the earth was the center of the cosmos, kept in position by the mutual attraction and repulsion of the stars and planets which revolved about it. [1]

Quotes | On
The following are quotes about Ptolemy:

Isaac Newton ranks with Copernicus and Einstein among principal shapers of our physical worldview. However, whereas we can appreciate Copernicus against the backdrop of Ptolemy, Einstein against the backdrop of Newton, Newton himself may strike the average educated non-scientist as somewhat remarkable.”
— Dennis Danielson (2001), The Book of the Cosmos: Imagining the Universe From Heraclitus to Hawking (Ѻ)

Quotes | By
The following are representative quotes:

“I know that I am mortal by nature and ephemeral, but when I trace at my pleasure the windings to and fro of the heavenly bodies, I no longer touch earth with my feet. I stand in the presence of Zeus himself and take my fill of ambrosia.”
— Ptolemy (c.150), penned in the margins of Almagest (Ѻ)

“As material fortune is associated with the properties of the body, so honor belongs to those of the soul.”
— Ptolemy (c.150), Tetrabiblos (Book 4:1) (Ѻ)

See also
● Ptolemy I
● Ptolemy II

References
1. Bray, Henry T. (1910). The Living Universe (pg. 135). Truro Publishing Co., 1920.

External links
Ptolemy – Wikipedia.

TDics icon ns

More pages