Four Temperaments is a theory of psychology that stems from the ancient concept of four humors (humorism). It is considered debunked and obsolete by contemporary professionals. **************Sanguine Sanguine indicates the personality of an individual with the temperament of blood, the season of spring (wet and hot), and the element of air. A person who is sanguine is generally optimistic, cheerful, confident, popular, and fun-loving. He or she can be daydreamy to the point of not accomplishing anything and can be impulsive, possibly acting on whims in an unpredictable fashion. Sanguines usually have a lot of energy, but have a problem finding a way to direct the energy. This also describes the manic phase of a bipolar disorder.********************Choleric Choleric corresponds to the fluid of yellow bile, the season of summer (dry and hot), and the element of fire. A person who is choleric is a doer and a leader. They have a lot of ambition, energy and drive, and try to instill it in others, and can dominate people of other temperaments, especially phlegmatic types. Many great charismatic, military and political figures were cholerics. On the negative side, they are easily angered or bad tempered.In folk medicine, a baby referred to as "colic" is one who cries frequently and seems to be constantly angry. This is an adaptation of "choleric," although no one now would attribute the condition to bile. Similarly, a person described as "bilious" is mean-spirited, suspicious, and angry. This, again, is an adaptation of the old humour theory "choleric." The disease Cholera gained its name from choler (bile).***************Melancholic Melancholic is the personality of an individual characterized by black bile; hence (Greek µe?a?, melas, "black", + ????, kholé, "bile"); a person who was a thoughtful ponderer had a melancholic disposition. Often very kind and considerate, melancholics can be highly creative - as in poets and artists - but also can become overly obsessed on the tragedy and cruelty in the world, thus becoming depressed. It also indicates the season of autumn (dry and cold) and the element of earth. A melancholy is also often a perfectionist, being very particular about what they want and how they want it in some cases. This often results in being unsatisfied with one's own artistic or creative works, always pointing out to themselves what could and should be improved. This temperament describes the depressed phase of a bipolar disorder. There is no bodily fluid corresponding to black bile. However, the medulla of the adrenal glands decomposes very rapidly after death, and it is possible that this product is the mythical "black bile".***********************Phlegmatic A phlegmatic person is calm and unemotional. Phlegmatic means pertaining to phlegm, corresponds to the season of winter (wet and cold), and connotes the element of water. While phlegmatics are generally self-content and kind, their shy personality can often inhibit enthusiasm in others and make themselves lazy and resistant to change. They are very consistent, relaxed, rational, curious, and observant, making them good administrators and diplomats. Like the sanguine personality, the phlegmatic has many friends. But the phlegmatic is more reliable and compassionate; these characteristics typically make the phlegmatic a more dependable friend.