It will not surprise us to find that not only numbers but also mental occurrences of different kinds of words regularly prove on analytic investigation to be well determined. Brill relates: “While working on the English edition of this book I was obsessed one morning with the strange word ‘Cardillac.’ Busily intent on my work, I refused at first to pay attention to it, but, as is usually the case, I simply could not do anything else. ‘Cardillac’ was constantly in my mind. Realizing that my refusal to recognize it was only a resistance, I decided to analyse it. The following associations occurred to me: _Cardillac_, _cardiac_, _carrefour_, _Cadillac_. “_Cardiac_ recalled cardalgia--heartache--a medical friend who had recently told me confidentially that he feared that he had some cardiac affection because he had suffered some attacks of pain in the region of his heart. Knowing him so well, I at once rejected his theory, and told him that his attacks were of a neurotic character, and that his other apparent physical ailments were also only the expression of his neurosis. “I might add that just before telling me of his heart trouble he spoke of a business matter of vital interest to him which had suddenly come to naught. Being a man of unbounded ambitions, he was very depressed because of late he had suffered many similar reverses. His neurotic conflicts, however, had become manifest a few months before this misfortune. Soon after his father’s death had left a big business on his hands. As the business could be continued only under my friend’s management, he was unable to decide whether to enter into commercial life or continue his chosen career. His great ambition was to become a successful medical practitioner, and although he had practised medicine successfully for many years, he was not altogether satisfied with the financial fluctuations of his professional income. On the other hand, his father’s business promised him an assured, though limited, return. In brief, he was ‘at a crossing and did not know which way to turn.’ “I then recalled the word _carrefour_, which is the French for ‘crossing,’ and it occurred to me that while working in a hospital in Paris I lived near the ‘Carrefour St. Lazarre.’ And now I could understand what relation all these associations had for me.