In existographies, William Sidis (57-11 BE) (1898-1944 ACM) (IQ:175|#349) (D:3.80|A46) (RGM:838|1,350+) (Norlinger 22:35) (CR:168) (LH:6) (TL:174|#58) was an American mathematician and physicist, the result of a forced prodigy experiment, noted for his 1920 The Animate and the Inanimate, wherein he attempted to explain the origin of animate forms according to reversibility and second law, within the context of then-current cosmology models.
Quotes | On
The following are quotes on Sidis:
- “I have tested more than five thousand people. Of all the mentally superior individuals that I have seen, nobody begins to approach the intellect and perspicacity of William Sidis. According to my computations, he easily had an IQ between 250 and 300.”
- — Abraham Sperling (c.1940), New York City's Aptitude Testing Institute Director 
Quotes | By
The following are quotes by Sidis:
- “Animal life acts the part of Clerk-Maxwell's sorting demon.”
- — William Sidis (1920), The Animate and the Animate (pg. #)
- “The laws that govern the structure of an economic system cannot, in the nature of things, be set aside or altered by anything a mere government can do.”
- — William Sidis (1938), “The Past is the Key to the Present” 
- (a) Wallace, Amy. (1986). The Prodigy: a Biography of William James Sidis, America's Greatist Child Prodigy (pg. 283). Dutton Adult.
(b) Sperling, Abraham. (1946). “A Story of Genius” (pgs. 322-339) (txt); in Psychology for the Millions, F. Fell.
- Sidis, William J. (1938). “The Past is the Key to the Present” (WB), Continuity News, No. 6, Oct; in: Helena Sidis files, 1977.
- William Sidis – Hmolpedia 2020.