Rudolf Carnap (1891–1970) German philosopher
Source: Logical Syntax of Language, 1934/1937, p. 1
paraphrasing Frege's Begriffsschrift, a formula language, modeled upon that of arithmetic, for pure thought (1879) in Jean Van Heijenoort ed., in From Frege to Gödel: A Source Book in Mathematical Logic, 1879-1931 (1967)
Rudolf Carnap (1891–1970) German philosopher
Source: Logical Syntax of Language, 1934/1937, p. 1
R. G. Collingwood (1889–1943) British historian and philosopher
Source: The Principles of Art (1938), p. 268
Geoffrey Hodson (1886–1983) New Zealand occultist
Reincarnation & Christianity (1967)
Edward Sapir (1884–1939) American linguist and anthropologist
As cited in: Geza Revesz, The Origins and Prehistory of Language, London 1956. footnote pp. 126-127; As cited in: Adam Schaff (1962). Introduction to semantics, p. 313-314
Language (1921)
Otto Neurath (1882–1945) austrian economist, philosopher and sociologist
Source: 1930s, "Protocol Statements" (1932), p. 91
Caterina Davinio (1957) Italian writer
Source: Virtual Mercury House. Planetary & Interplanetary Events, p. 48
George Boole (1815–1864) English mathematician, philosopher and logician
Source: 1850s, An Investigation of the Laws of Thought (1854), p. 42
R. G. Collingwood (1889–1943) British historian and philosopher
Source: The Principles of Art (1938), p. 269
Alfred Korzybski (1879–1950) Polish scientist and philosopher
Source: Science and Sanity (1933), p. 76.
Tobias Dantzig (1884–1956) American mathematician
p, 125
Number: The Language of Science (1930)