Oscar Wilde, poet, playwright, gay icon and deathbed convert to Catholicism, has been paid a rare tribute by the Vatican. His aphorisms are quoted in a collection of maxims and witticisms for Christians that has been published by one of the Pope’s closest aides.

Wilde (1854-1900) had long been regarded with distaste by the Vatican — a dissolute and disgraced homosexual who was sentenced for acts of gross indecency over his relationship with Lord Alfred Douglas.

The book, compiled by Father Leonardo Sapienza, head of protocol at the Vatican, includes such Wildean gems as “I can resist everything except temptation” and “The only way to get rid of a temptation is yield to it” — hardly orthodox Catholic teaching.

Father Sapienza said that he had devoted the lion’s share of Provocations: Aphorisms for an Anti-conformist Christianity to Wilde because he was a “writer who lived perilously and somewhat scandalously but who has left us some razor-sharp maxims with a moral”. The book also includes contributions from the Colombian philosopher Nicolás Gómez Dávila.

Father Sapienza said that Wilde had been a great writer of powerful force and dazzling intelligence who was now chiefly remembered not for his promiscuity but for plays such as The Importance of Being Earnest and An Ideal Husband as well as moral tales such as The Picture of Dorian Gray, in which a vain young man pays a terrible price for selling his soul to gain eternal youth.

Father Sapienza said that he wanted to “stimulate a reawakening in certain Catholic circles”. Christianity was intended to be a radical cure, not a humdrum remedy for the common cold: “Our role is to be a thorn in the flesh, to move people’s consciences and to tackle what today is the No 1 enemy of religion — indifference.”

“What a surprise!” La Repubblica’s said. “A homosexual icon has been accepted by the Vatican.” Orazio La Rocca, a Vatican watcher, described the book as a bombshell.

Pope Benedict XVI is a stern opponent of gay marriage and has reinforced Catholic teaching that homosexuality is a disorder. On the other hand he has belied his reputation as a hardliner since his election, reserving most of his fire for apathy and relativism in an attempt to revive Christian faith in Europe.

Wilde, who was married and had two children, was arrested and tried in 1895 over his relationship with Lord Douglas (known as Bosie), son of the Marquess of Queensberry, who had accused Wilde of sodomy. The writer sued Queensberry but lost and was sentenced to two years’ hard labour.

He displayed a long fascination with Catholicism, once remarking: “I am not a Catholic — I am simply a violent Papist.” He was born in Dublin to a Protestant family but fell under the spell of Catholicism at Oxford. He even made a journey for an audience with the Pope, but declared: “To go over to Rome would be to sacrifice and give up my two great Gods: Money and Ambition.” The way for Wilde’s rehabilitation was paved six years ago by a Jesuit theologian, Father Antonio Spadaro. On the centenary of Wilde’s death, he raised eyebrows by praising the “understanding of God’s love” that had followed Wilde’s imprisonment in Reading.

Father Spadaro said that at the end of his life Wilde had seen into the depths of his own soul and in his last works, such as De Profundis, had made “an implicit journey of faith”. He said that Wilde had come to see that God was capable of “breaking hearts of stone and entering into them with mercy and forgiveness”.

What a pity that in life we only get our lessons when they are of no use to use

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