Christians, who condemn the communists for their godlessness and anti-religious persecutions, cannot lay the whole blame solely upon these godless communists; they must assign part of the blame to themselves, and that a considerable part. They must be not only accusers and judges; they must also be penitents. Have Christians done very much for the realization of Christian justice in social life? Have they striven to realize the brotherhood of man without that hatred, and violence of which they accuse the communists? The sins of Christians, the sins of the historical churches, have been very great, and these sins bring with them their just punishment. Betrayal of the covenant of Christ, the use of the Christian Church for the support of the ruling classes, human weakness being what it is, cannot but bring about the lapse from Christianity of those who are compelled to suffer from that betrayal and from such a distortion of Christianity.
–Nicolas Berdyaev, The Origin of Russian Communism. trans. R.M. French (Ann Arbor, MI: The University of Michigan Press, 1962), 171.