“Love is not just a virtue or an emotion. It is the basis for all physical and nonphysical being. All things created were created from love to love. Love is in essence the profound feeling space of total and complete oneness.”

Attributed to Laozi in self-help books and on social media, this quotation is of unknown origin and date.
Misattributed

Note to Stanza 28 part 3
Spiritual Canticle of The Soul and The Bridegroom, Notes to the Stanzas
Context: When the soul, then, in any degree possesses the spirit of solitary love, we must not interfere with it. We should inflict a grievous wrong upon it, and upon the Church also, if we were to occupy it, were it only for a moment, in exterior or active duties, however important they might be. When God Himself adjures all not to waken it from its love, who shall venture to do so, and be blameless? In a word, it is for this love that we are all created. Let those men of zeal, who think by their preaching and exterior works to convert the world, consider that they would be much more edifying to the Church, and more pleasing unto God — setting aside the good example they would give if they would spend at least one half their time in prayer, even though they may have not attained to the state of unitive love.

Relentless (1992)

Book 1 (Sefer HaMadda'<!--[sic]-->), 4.12
Mishneh Torah (c. 1180)
Context: When a man reflects on these things, studies all these created beings, from the angels and spheres down to human beings and so on, and realizes the divine wisdom manifested in them all, his love for God will increase, his soul will thirst, his very flesh will yearn to love God. He will be filled with fear and trembling, as he becomes conscious of his lowly condition, poverty, and insignificance, and compares himself with any of the great and holy bodies; still more when he compares himself with any one of the pure forms that are incorporeal and have never had association with any corporeal substance. He will then realize that he is a vessel full of shame, dishonor, and reproach, empty and deficient.

Source: Father and Child Reunion (2001), p. 88.

Wesley quoting his own sermon on "The Circumcision of the Heart" (1 January 1733) in the work A Plain Account Of Christian Perfection (Edition of 1777)
General sources

Source: Inner Engineering: A Yogi's Guide to Joy