The spirit of charity is none other than the Holy Spirit of God, the Third Person of the Ever-Blessed Trinity. He not only is the Spirit of Charity, but Charity itself. The personal love of the Eternal Father for His co-equal Son is identical with the Holy Ghost who proceeds from the Father and the Son. All these Persons are consubstantial and co-equal, united together by Infinite Love. This Infinite Love is itself one of the Divine Persons. Adore this mystery and pray for the humble faith that believes what it cannot comprehend.
It is from and through the Holy Spirit that the Charity of God is imparted to us. The Charity of God is poured into our hearts by the Holy Spirit. When we receive the gift of supernatural charity, we also receive into our hearts the Holy Spirit Himself, who is actually present with us. His presence produces all the graces that flow from His seven-fold gifts. Reflect on the exceeding honor we thus enjoy and pray that you may never grieve the Holy Spirit by your want of charity.
Charity is also mentioned as the first and foremost of the fruits that the Holy Spirit causes to ripen in our hearts. "The fruit of the Spirit is charity, joy, peace, patience, benignity, goodness, longanimity, mildness, faith, modesty, continence, and chastity." (Galatians 5:22,23) All these fruits are but the effects of charity. Charity brings joy because it unites us to God. It brings peace because it prevents our will from rebelling against His. Pray that the Holy Spirit may impart to you these fruits of His presence; above all, the charity whence the rest proceed.
- text from Charity, Meditations for a Month by Father Richard Frederick Clarke, SJ