The person is a self-master, inwardly inalienable, self-determined and with free will.
No one should replace the other in voluntary acts.
Even the Creator does not use people as means, but He has created them reasonable and free to determine the aims that He makes cognizable that they tend to them and choose them freely.
Kant formulated the principle of the moral order allowing everyone to have his or her own purpose and meaning to life; being a sake for others underpins freedom of conscience and every other righteous freedom.
Using the other as a tool is contrary to nature, but love for one’s own neighbor is free, as it recognizes the good of others, builds and adopts the common aim to unite from within their nature.
A shared choice subordinates to the common good without subduing; while willing to seek good with others, a person may look to them as objects to be served with love; free from consumerism and in a relationship of communion, everyone treats himself or herself and each person according to his or her nature.
Each action is connected to existence, first and fundamental good in relation to God, the Creator, who has given us the reason, the ability to determine acts and the possibility of making love freely by freely choosing a good as a purpose.
Thus, the incommunicability of one’s being is associated with the possibility of giving oneself, which is fully realized in spousal love.
Man is instinctively drawn by the commandment of love which, for natural purposes, correctly interprets God’s will.
The fact of having to love and how to love in human nature are visible in marriage and procreation, suited to the dignity of the person to be loved.