The nature of man is the emulation of God

Thomas Aquinas takes the concept of nature from Aristotle and explains in his work Summa Theologica that the good is a nature. A nature is according to Aristotle to what the being tends in its development. Thomas Aquinas concludes that every being desires its own good or perfection and that the good is a nature, all being tends to its own completitude or to say towards its maximum development. Example: the fruit is good when it is mature.
The gospels add some information about the good: "Only God is good" Mark 10:18. The good is a perfection of God, is a spiritual gift, God is the source of the good.
Then a question arises, what is the good of man? What is the nature of man? What does man tend in his development?
We can say that the adult man is the man gifted of the Art of Listening; so what is the Art of Listening?
The Art of Listening is: listen (perceive with attention), meditate (with intuition and inspiration), decide.
Practical cases are: Jesus and the denarius (Mark 12), Jesus and the prostitute (John 8)
The Art of Listening is known as Emulating God (Book of Rhetoric, Aristotle), or to say we resolve what is presented to our judgement as God in person, capturing the mind of God. That is the action of the Holy Spirit in the Christian Religion.
Concluding we can affirm that the nature of man is the conformity to God, the nature of man is the emulation of God.
http://www.quintoevangelio.com.ar/en/articles/item/90-the-nature-of-man.html

Keep your tongue from evil

"Keep your tongue from evil, and your lips from speaking deceit. Depart from evil and do good; seek peace and pursue it" Psalm 34:14. Good and evil are basic choices of the human being, we choose between righteousness (the golden rule, imitating christ) and sin.
Love instead is a gender, there is the evil love. The love of charity, which is an ethical demand is the love perfected by the nature of the good, in love we also choose in a destructive or uplifting sense. Love does not change the fact of how we choose. That is why we speak of benevolence and malevolence. The sin is an habit or not.
Justice, on the other hand, is a virtue whose fundamental aim is to maintain friendship among men, the unjust people can not be friends with each other, in fact Aristotle calls Justice, generalized friendship.
http://www.quintoevangelio.com.ar/en/articles/item/71-the-good-and-the-evil.html

God is good

The good is a nature, a spiritual gift and a mood of discern:
The good as a nature:
Aristotle in his book "Politic" explains that a nature is toward what the being tends in its development, example: the nature of the worm is the butterfly.
Thomas Aquinas father of the scholasticism take this idea and affirm that the good is a nature, every being tends towards his own good or perfection explains, example: the house is good when it is finished, the fruit is good when in mature.

The good as spiritual gift:
Thomas Aquinas explains that the good is a spiritual gift. God is the source of the good. "Only God is good" Mark 10:18. The good is a perfection of god, we inherit the good from God.
The good as Spiritual Gift is known as the Golden Rule: "Do unto others as you would have them do unto you" Matthew 7:12, this is also known as imitating Jesus. A practical case of this rule is the parable of the  Good Samaritan. Luke 10: 29-37

The good as a discernment:
Good and evil are lifestyles. The good as discernment is one of the seven gifts of the Holy Spirit. The spiritual gift of good discernment accompanies the spiritual gift of knowledge and the gift of wisdom after the Gnosis. The goal of this spiritual gift is to separate what is wrong from what is right, this gift in religion is directly related with the Holy Spirit.
http://www.quintoevangelio.com.ar/en/articles/item/10-god-is-good.html