Being and Time mentioned in "Being and Time", has been identified by some with Heidegger's central notion of "Sorge" ("cura", care or concern). However, for Heidegger, "theoretical" knowledge represents only one kind of intentional behaviour, and he asserts that it is grounded in more fundamental modes of behaviour and forms of practical engagement with the surrounding world. Whereas a theoretical understanding of things grasps them according to "presence," for example, this may conceal that our first experience of a being may be in terms of its being "ready-to-hand." Thus, for instance, when someone reaches for a tool such as a hammer, their understanding
Chamaeleon (philosopher) Diogenes Laërtius says, that Chamaeleon accused Heraclides Ponticus of having stolen from him his work concerning Homer and Hesiod. The above works were probably both biographical and critical. He also wrote works entitled περὶ θεῶν, and περὶ σατύρων, and some moral treatises, περι ἡδονῆς (which was also ascribed to Theophrastus), προτρεπικόν, and περι μέθης. Of all his works only a few fragments are preserved by Athenaeus and other ancient writers. Chamaeleon (philosopher) Chamaeleon (or Chameleon; ; c. 350 – c. 275 BC), was a Peripatetic philosopher of Heraclea Pontica. He was one of the immediate disciples of Aristotle. He wrote