For while we have the two main types of introvert and extravert based on the two major instincts, we have also the four types based on the functions. In other words, a man may not only be an extravert or introvert, but also a thinking type, a feeling type, an intuitive type or a sensational type. According to Jung, these four functions of _thinking_, _feeling_, _intuition_ and _sensation_ constitute the make-up of the psyche; and each of us tends to accent one of them at the expense of the others. The _thinking type_ is one of the most easily discernible. He takes thought, he thinks things out; he thinks before he acts. He is apt to be logical, deliberate, fairly sure of himself, even dogmatic. He usually lives by a system of thought he has worked out, and which he tries to force upon others. He has strong opinions, because he has arrived at them by sure-footed thinking. If he is extraverted he is the good executive, the engineer, the lawyer; if introverted, the philosopher and certain types of scientist. The thinking type is found mostly among men; in Jung’s opinion thinking is a masculine function. The _feeling type_ is usually found among women; though there have been men, and great ones, who were of this type: notably Goethe, Wagner and Walt Whitman. The feeling type, normally, is not good at thinking, is, in fact, opposed to thinking, since thinking a thing out is the opposite of feeling it out. Feeling, itself, is a reaction of _like_ and _dislike_ and is a delicate adjustment to the _fitness of things_. The values of the extraverted feeling woman are almost purely external. In choosing a husband she aims rather at the correct thing than at the deeper qualities. The man who has wealth, position, and who dresses according to the style, who has good company manners and is worldly is apt to appeal to her. Her feelings are appeased by him; she isn’t “jarred” or made to feel his unfitness for the world she lives in. She “likes” him. Her opinions on things are according to the styles of the moment. She desires everything to move along harmoniously, without any unpleasantness. She is not deep, but she keeps society afloat by her ease and attempt to bring everything into harmony. The _introverted feeling woman_ is one of the silent women. Her feelings form into long moods, which persist sometimes for days. She suffers quietly and cannot express herself. She has no language for these moods. Feeling, by the way, must not be confused with _emotion_. Emotion, as Jung points out, is a _feeling-sensation_; that is, it is at the same time both mental and physical; something instinctive, which we share with the animals. An emotion of joy, for instance, not only is perceived mentally, a state of happiness, but also is felt physically: the pulse goes faster, the cheeks become flushed, etc. But feeling is something separated more or less from sensation and developed into an independent function.