This article focusses on the word “therefore” (and its near synonyms) and the role that it plays in syllogistic and non syllogistic reasoning, particularly in the phrase “…therefore I must kill myself.” It is shown that the traditional Aristotelian role of transformation between the premisis and the conclusion, and is, in fact a bridge with a rather wide range of psychological and temporal dimensions. Some practical implications for the treatment of suicidal persons are cited.