In the following paper I will argue that there are interesting connections between the founder of analytical psychology, Carl Gustav Jung, and the school of existentialism. Analytical psychology and existentialism share almost the same Zeitgeist (becoming influential between the 1930’s and 1960’s) and are both interested in the concept of individuality. I would like to follow the liaison between Jung and existentialism regarding authenticity and death. First of all, the concept of authenticity deserves extensive treatment. Heidegger’s das Man and Sartre’s (...) mauvaise foi have an interesting companion in Jung’s notion of the persona, the psychological concept of “the mask”. Second of all, existentialist authenticity can be compared to the Jungian integration of the shadow. Moreover, the concept of death (Heidegger’s Sein-zum-Tode) can be compared with Jung’s understanding of death from The Red Book. (shrink)

Relatively recent literature on supposition theory seems to use different modern logical tools of interpretation that can be generally described as formalizations. Since the act of formalizing may be understood as a process of changing its object in the sense of making it more formal, an assessment of this kind of approaches is necessary. Accordingly, our main goal in this paper is to analyze the formality of Peter of Spain’s theory of supposition and to evaluate its interpretation as a quantification (...) theory. Our main thesis is that although Peter’s theory presents certain weak notions of formality, the formality presupposed by the quantificational interpretation is nowhere to be found in his considerations. (shrink)