Gottlob Frege book The Foundations of Arithmetic
Gottlob Frege (1950 [1884]). The Foundations of Arithmetic. p. 99.
Source: His Master's Voice (1968), Ch. 9
Gottlob Frege book The Foundations of Arithmetic
Gottlob Frege (1950 [1884]). The Foundations of Arithmetic. p. 99.
Rudolf Carnap (1891–1970) German philosopher
Rudolf Carnap (1935) Philosophy and Logical Syntax. p. 9-10
Richard von Mises (1883–1953) Austrian physicist and mathematician
Second Lecture, The Elements of the Theory of Probability, p. 30
Probability, Statistics And Truth - Second Revised English Edition - (1957)
John F. Kennedy (1917–1963) 35th president of the United States of America
1962, Rice University speech
Context: We set sail on this new sea because there is new knowledge to be gained, and new rights to be won, and they must be won and used for the progress of all people. For space science, like nuclear science and all technology, has no conscience of its own. Whether it will become a force for good or ill depends on man, and only if the United States occupies a position of pre-eminence can we help decide whether this new ocean will be a sea of peace or a new terrifying theater of war. I do not say that we should or will go unprotected against the hostile misuse of space any more than we go unprotected against the hostile use of land or sea, but I do say that space can be explored and mastered without feeding the fires of war, without repeating the mistakes that man has made in extending his writ around this globe of ours.
Bertrand Russell (1872–1970) logician, one of the first analytic philosophers and political activist
1910s, The Philosophy of Logical Atomism (1918)
Ernesto Che Guevara (1928–1967) Argentine Marxist revolutionary
Tactics and Strategy of the Latin American Revolution (1962)