Glastra van Loon, J.F.

knowledge reality subject action symbol positivist meaning objective experience object relationship objective reality experienoe element perception science concept thing experience elements ability phenomena observation sense situation significance field matter conception validity regard point reason individual peroeption sphere process problem basis context positivism understanding possibility whioh signal something glass assumption question subjectivity freedom objective determination degree nature people paper value player determination system lmowledge objeot oondition power cognition impression position oognitive power philosophy product other experience concept fellow piece quality classification behaviour beoome agreement operation result