“To sin is to refuse to love one’s neighbours and, therefore, the Lord himself. Sin – a breach of friendship with God and others – is according to the Bible the ultimate cause of poverty, injustice, and the oppression in which men live. In describing sin as the ultimate cause we do not in any way negate the structural reasons and the objective determinants leading to these situations. It does, however, emphasize the fact that things do not happen by chance and that behind an unjust structure there is a personal or collective will responsible – a willingness to reject God and neighbour.”
– Gustavo Gutierrez, A Theology of Liberation.