Decadence, instability, disintegration, corruption, reversal of attitude, all that arises through the simple fact of one's going on existing without self-criticism, self-renewal, constant self-adaptation, without letting anything in one die, through the simple fact of gradually settling down in the vantage point one occupies, the good conscience one enjoys. Such is the permanent danger of all spiritual life. It is an inevitable deterioration which can only be overcome-and painfully at that-by a watchful mustering of strength-unless it be effortlessly vanquished by a wonderful gift of grace....Whence the necessity of paradox: or rather the perpetual flavor of paradox that truth has, when it is freshly expressed, for the man who clings to a truth when it is in the process of turning into a lie.