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
Thomas Brown (philosopher) Darwin's theory of transmutation. The philosopher published it in the form of a detailed study "Observations on the zoonomia of Erasmus Darwin" (1798), which was recognized as a mature work of criticism. There, Brown wrote: Noteworthy, Brown's criticism of the Darwinian thesis, like that of Rudolf Virchow, did not come from any religious feeling. Brown's philosophy occupies an intermediate place between the earlier Scottish school and the later associational psychology, to which he really belonged. Later criticism of Brown's philosophy lessened its popularity, a severe attack being made by Sir William Hamilton, 9th Baronet in his "Discussions" and "Lectures on