“Do not then go beyond yourself to seek for evil, and imagine that there is an original nature of wickedness. Each of us, let us acknowledge it, is the first author of his own vice. [...] Here you are the master of your actions. Do not look for the guiding cause beyond yourself, but recognize that evil, rightly so called, has no other origin than our voluntary falls.”
St Basil the Great, Hexæmeron, Homily 2