Archives par étiquette : Popper

Karl Popper on knowledge and natural laws

We must search for natural laws, for law-like regularities, if we want to obtain any knowledge at all. But this does not in any way require us to assume the existence of strictly universal laws; il is enough for us to know that knowledge consists in searching for strictly universal laws — as if they existed. (p. 85)

Popper, K. (2012). The two fundamental problems of the theory of knowledge. London: Routledge Classics. (Originally published 1978)

Les trois mondes de Karl Popper

Dans cette philosophie pluraliste, le monde est constitué d’au moins trois sous-mondes ontologiquement distincts ; ou, dirais-je, il y a trois mondes : le premier est le monde physique, ou le monde des états physiques ; le second est le monde mental, ou le monde des états mentaux ; et le troisième est le monde des intelligibles, ou des idées au sens objectif ; c’est le monde des objets de pensée possibles : le monde des théories en elles-mêmes et de leurs relations logiques ; des argumentations en elles-mêmes ; et des situations de problèmes en elles-mêmes. (p. 247)

Popper, K. (1991). Sur la théorie de l’esprit objectif. In K. Popper (Ed.), La connaissance objective (pp. 245-293). Paris : Aubier. (Première version 1968)

Karl Popper on the general and the particular

And the irrationalist not ony tries to rationalize what cannot be rationalized, but he also gets hold of the wrong end of the stick altogether. For it is the particular, the unique and the concrete individual, which cannot be approached by rational methods, and not the abstract universal. Science can describe general types of landscape, for example, or of man, but it can never exhaust one single individual landscape, or one single individual man. The universal, the typical, is not only the domain of reason, but it is also largely the product of reason, in so far it is the product of scientific abstraction. But the unique individual and his unique actions and experiences and relations to other individuals can never be fully rationalized. And it appears to be just this irrational realm of unique individuality which makes human relations important. (p. 449)

Popper, K. (2013). The open society and its enemies. Princeton, NJ: Princeton University Press. (Original published 1945 in two volumes)