• Bolzanos Biographie in tabellarischer Übersicht
    with Edgar Morscher and Heinrich Ganthaler
    Philosophia Naturalis 24 (4): 353-372. 1987.
  •  16
    Middle-career development through spiritual lifestyle coaching: Preliminary theoretical perspectives
    with Madelein C. Fourie
    HTS Theological Studies 69 (2): 1-9. 2013.
    This study bases itself in the epistemological and methodological development of a broad and interdisciplinary dialogue where various voices in the form of different domains converse in order to establish an integrated whole. The research contributes to the actual corporative question regarding spirituality in the workplace, specifically aimed at the individual in the middle-career phase. This phase is characterised as a re-evaluation period aimed at personal and professional growth. A shift in …Read more
  •  34
    Concerning the Festive and the Mundane
    Journal of Phenomenological Psychology 28 (2): 196-234. 1997.
    The festive and the quotidian offer two fundamentally different perspectives on the human world. The quotidian attitude opens to us a workaday world structured by mental and physical barriers which require to be leveled or removed. The festive attitude gives access to a world of the threshold in which we play the role of host and guest and in which it is possible for things and living beings to make their personal appearance. Modernity can be understood as an era in which a quotidian, work-orien…Read more
  •  18
    On Hallucinating
    Journal of Phenomenological Psychology 6 (1): 1-16. 1975.
  • Problem för kunskap i vår tid
    Norsk Filosofisk Tidsskrift 3 (3): 35. 1982.
  •  33
    A note on reduction sentences
    Theoria 24 (1): 1-8. 1958.
  •  1
    The schizophrenic patient: Anthropological considerations
    In A. J. J. de Koning & F. A. Jenner (eds.), Phenomenology and Psychiatry, Grune & Stratton. 1982.
  •  16
    From Bolzano’s Point of View
    The Monist 83 (1): 47-67. 2000.
    I am going to present logic, logical semantics, ontology, proof theory, the foundations of mathematics, and certain aspects of the philosophy of nature from Bolzano’s point of view.
  • De dingen en andere essays
    Tijdschrift Voor Filosofie 57 (4): 781-781. 1995.
  • Jan Odelstad: Invariance and Structural Dependence (review)
    Theoria 60 (1): 63. 1994.
  • Metabletica van God. De drie voornaamste veranderingen
    Tijdschrift Voor Filosofie 58 (3): 597-598. 1996.
  •  7
    Bolzano, the Prescient Encyclopedist
    Grazer Philosophische Studien 53 (1): 13-32. 1997.
    In his Wissenschaftslehre Bernard Bolzano tried to lay down a logically satisfactory foundation of mathematics and theory of probability. Thereby he became aware of the distinction between the actual thoughts and judgments of human beings, their linguistic expressions and the abstract propositions {Sätze an sich) and their components (Vorstellungen an sich). This ontological distinction is fundamental in Bolzano's thinking paired with a universal world view in the sense that philosophy, mathemat…Read more
  •  88
    From Bolzano’s Point of View
    The Monist 83 (1): 47-67. 2000.
    This is a presentation of Bolzano's ideas on logic, logical semantics, ontology, proof theory, the foundations of mathematics, and certain aspects of the philosophy of nature. Bolzano's world view was a universal one in the sense that philosophy, mathematics, physics, and metaphysics should build upon the same logical foundation. In the pursuit of this encyclopaedic point of view he already recognized many of the essential things to come in logic and the foundations of mathematics