Peter Lombard

It has indeed been said above and shown by sacred authorities,2 that the Holy Spirit is the Love [amor] of the Father and the Son, by which They love [amant] one another and us. Moreover, it must be added to these, that the very same Holy Spirit is the Love or Charity, by which we love [diligimus] God and neighbor. When this Charity is so great in us, that it makes us love God and neighbor, the Holy Spirit is then said to be sent and/or to be given3 to us; and he who loves the very love [dilectionem], by which he loves (his) neighbor, in this very (thing) loves God, because Love itself is God,4 that is, the Holy Spirit.

From the aforesaid it grows clear, that the Holy Spirit is the Charity, whereby we love God and neighbor; whence it is more easy for us to show, in what manner the Holy Spirit is sent or given to us.
Master Peter Lombard
Archbishop of Paris

The Four Books of Sentences

LIBER PRIMUS SENTENTIARUM.




THE FIRST BOOK OF THE SENTENCES

http://www.franciscan-archive.org/lombardus/opera/ls1-17.html

Peter Lombard or Petrus Lombardus; (c. 1100 — July 20, 1160 in Paris) was a scholastic theologian and bishop and author of Four Books of Sentences, which became the standard textbook of theology, for which he is also known as Magister Sententiarum.Peter Lombard was born in Lumellogno[1] (then a rural commune, now a quartiere of Novara, Piedmont), to a poor family.[2] His date of birth was likely between 1095 and 1100.
http://en.wikipedia.org/wiki/Peter_Lombard