“The kingdom of God cannot be imposed; if it is to be brought about we must be born again, and that supposes complete freedom of spirit. Christianity is the religion of the Cross, and it sees a meaning in suffering. Christ asks us to take up our own cross and carry it, to shoulder the load of a sinful world. In Christian consciousness the notion of attaining happiness, justice, and the kingdom of God on earth without cross or suffering is a huge lie: it is the temptation that Christ rejected in the wilderness when he was shown the kingdoms of the world and invited to fall down and worship. Christianity does not promise its own necessary realization and victory here below; Christ even questioned whether he will find any faith on earth when he comes again at the end of time, and foretold that love itself will have grown cold.
Tolstoy believed that Christ’s commands could be easily fulfilled simply by recognizing their truth. But that was a mistake of his over-rationalizing consciousness; the mysteries of freedom and of grace were beyond him, his optimism contradicted the tragic depths of life. “The good which I will I do not,” says the apostle Paul, “but the evil which I will not, that I do. Now if I do that which I will not it is no more I that do it, but sin that dwelleth in me.” This testimony of one of the greatest of all Christians unveils the innermost part of the human heart, and it teaches us that the “failure of Christianity” is a human failure and not a divine defeat.”
(Nicholas Berdiaev, Tradition Alive, pp. 96-97)