Purity is the virtue that involves controlling one's mind and body in holiness and honor; recognizing the sacredness and purpose of the body. Purity of thought is the key to the purity of the body and holiness of the soul. If the mind is pure, so will the body and soul.
"Blessed are the clean of heart: for they shall see God." - Matthew 5:8
"There is need for a crusade of manliness and purity to counteract and nullify the savage work of those who think man is a beast, and that crusade is your work," - St. Josemaria Escriva
Chastity, or cleanness of heart, holds a glorious and distinguished place amine the virtues, because she, alone, enables man to see God: hence Truth itself said, "Blessed are the clean of heart, for they shall see God." - Saint Augustine
"Or know you not, that your members are the temple of the Holy Ghost, who is in you, whom you have from God; and you are not your own? 20 For you are bought at a great price. Glorify and bear God in your body." - 1 Corinthians 6:19-20
“Holy Purity, the queen of virtues, the angelic virtue, is a jewel so precious that those who possess it become like the angels of God in heaven, even though clothed in mortal flesh.” - Saint John Bosco
“The state of grace is nothing other than purity, and it gives heaven to those who clothe themselves in it. Holiness, therefore, is simply the state of grace purified, illuminated, beautified by the most perfect purity, exempt not only from mortal sin but also from the smallest faults; purity will make saints of you! Everything lies in this!” - Saint Peter Julian Eymard
"Purity prepares the soul for love, and love confirms the soul in purity." - St. John Henry Cardinal Newman
"Purity of soul cannot be lost without consent." - St. Augustine
"Those whose hearts are pure are temples of the Holy Spirit." St. Lucy
"Keep your heart pure. Apure heart is necessary to see God in each other. If you see God in each other, there is love for each other, then there is peace." - St. Teresa of Calcutta
"He who loves with purity considers not the gift of the lover, but the love of the giver." - Thomas a Kempis
"He who aspires to the grace of God must be pure, with a heart as innocent as a child's. Purity of heart is to God like a perfume, sweet and agreeable. - St. Nicholas of Flue
"That every one of you should know how to possess his vessel in sanctification and honour:" - 1 Thessalonians 4:4