Erich Fromm said this quote

Love is a decision, it is a judgment, it is a promise. If love were only a feeling, there would be no basis for the promise to love each other forever. A feeling comes and it may go. How can I judge that it will stay forever, when my act does not involve judgment and decision.

~ Erich Fromm

Love is not primarily a relationship to a specific person; it is an attitude, an ordination of character which determines the relatedness of the person to the whole world as a whole, not toward one object of love

~ Erich Fromm

Infantile love follows the principle: I love because I am loved. Mature love follows the principle: I am loved because I love. Immature love says: I love you because I need you. Mature love says: I need you because I love you.

~ Erich Fromm

Modern man has transformed himself into a commodity; he experiences his life energy as an investment with which he should make the highest profit, considering his position and the situation on the personality market. He is alienated from himself, from his fellow men and from nature. His main aim is profitable exchange of his skills, knowledge, and of himself, his personality package with others who are equally intent on a fair and profitable exchange. Life has no goal except the one to move, no principle except the one of fair exchange, no satisfaction except the one to consume.p97.

~ Erich Fromm