Commemoration of Alphege, Archbishop of Canterbury, Martyr, 1012 Faith knows nothing of external guarantees -- that is, of course, faith as an original experience of the life of the Spirit. It is only in the secondary esoteric sphere of the religious life that we find guarantees and a general attempt to compel faith. To demand guarantees and proofs of faith is to fail to understand its very nature by denying the free, heroic act which it inspires. In really authentic and original religious experience, to the existence of which the history of the human spirit bears abundant witness, faith springs up without the aid of guarantees and compelling proofs, without any external coercion or the use of authority.
— Nicholas Berdyeev
Christianity