Here are 2 of my favourite quotes from the early church fathers on singleness. Whilst I do not agree with their view that it is superior to marriage, their theology of singleness is very well developed and so much truth is contained with:
And what is virginal chastity but purity free from stain? And whom can we judge to be its author but the immaculate Son of God, Whose flesh saw no corruption, Whose Godhead experienced no infection? Consider, then, how great are the merits of virginity.
I am not indeed discouraging marriage, but am enlarging upon the benefits of virginity. "He who is weak," says the Apostle, "eats herbs." Romans 14:2 I consider one thing necessary, I admire another. "Are you bound to a wife? Seek not to be loosed. Are you free from a wife? Seek not a wife." 1 Corinthians 7:27 This is the command to those who are. But what does he say concerning virgins? "He who gives his virgin in marriage does well, and he who gives her not does better." 1 Corinthians 7:38 The one sins not if she marries, the other, if she marries not, it is for eternity. In the former is the remedy for weakness, in the latter the glory of chastity. The former is not reproved, the latter is praised. (St. Ambrose (340-397), Bishop of Milan, Concerning Virginity, Book 1. http://www.ccel.org/ccel/schaff/npnf210.iv.vii.ii.v.html)
A great thing is virginity, and celibacy, and being ranked with the angels, and with the single nature; for I shrink from calling it Christ’s, Who, though He willed to be born for our sakes who are born, by being born of a Virgin, enacted. Enacted by his religious rule, or as some say by a treatise on Virginity. the law of virginity, to lead us away from this life, and cut short the power of the world, or rather, to transmit one world to another, the present to the future. Who then paid more honour to virginity, or had more control of the flesh, not only by his personal example, but in those under his care? Whose are the convents, and the written regulations, by which he subdued every sense, and regulated every member, and won to the real practice of virginity, turning inward the view of beauty, from the visible to the invisible; and by wasting away the external, and withdrawing fuel from the flame, and revealing the secrets of the heart to God, Who is the only bridegroom of pure souls, and takes in with himself the watchful souls, if they go to meet him with lamps burning and a plentiful supply of oil? Moreover he reconciled most excellently and united the solitary and the community life. (Gregory Nazianzen, Archbishop of Constantinople in the fourth century,
Oration XLIII., http://www.ccel.org/ccel/schaff/npnf207.iii.xxvi.html)
I particularly love the last sentence about reconciling the solitary and community life. The Lord Jesus often went into the desert to pray but he also ministered to the crowds and loved spending time with his disciples. This is a challenge for all, particularly for single Christians.