Man has a dual nature. The spiritual nature of man is higher than the carnal nature of man.

From Ballentine's Legal Dictionary 3rd Edition:
Spiritual. Pertaining to the soul rather than the physical body of man. The higher as distinguished from the material or carnal nature of man. The relation between man and God. As the word is used to define hopes and fears which may be held out to a person charged with a crime when a confession is sought, it has been held to mean that which pertains to the soul or higher endowments of the mind in its relation to the Spirit of God, the Holy Spirit, and that which pertains to our holy religion. The spiritual nature of man would be his higher self, not the carnal. Johnson vs State, 107 Miss 196, 65 So 218.

Scripture also identifies the duality of man, the spiritual and the carnal.

1 Corinthians 15:44 It is sown a natural body; it is raised a spiritual body. There is a natural body, and there is a spiritual body.

Genesis 2:7 And the LORD God formed man of the dust of the ground, and breathed into his nostrils the breath of life; and man became a living soul.

2 Corinthians 4:16 For which cause we faint not; but though our outward man perish, yet the inward man is renewed day by day.

We can conclude that their are two constituents of man, the carnal aspect of man as well as the spiritual aspect of man. The spirit is the vital aspect of man, an eternal higher self and the principle constituent of man (the principle). In contrast the carnal aspect is the lower temporal self (temporary self). 

It should be noted that the definition of man is ambiguous in legal dictionaries. There is a reason for this... what is legal applies to legal entities. Man is not a legal entity simply because he is a man. Man must wilfully and consentingly accept a "human existence" to be considered a legal entity. Man is not equivalent to a human, this is explained in exhausting detail in the next section. Man is spiritual (non-secular) and the human is non-spiritual (secular). 

More indirect legal definitions...
Creature of reason.  Man. Slate v Jones, 1 Miss (Walk) 83, 85. (From Ballentine's Legal Dictionary 3rd Edition).
Animal. In law, all animal life other than man. An inferior or irrational sentient being, generally, though not necessarily possessed of the power of locomotion. In etymology, comprehending all living creatures, whether brutish or human.
This definition clearly illustrates that man is not an animal. A human is not excluded from the definition of animal and the last sentence places the human within the definition of an animal. Do not make the mistake (at this point) of "assuming" that man is equivalent to the other. READ THE NEXT SECTION ... "Human".