One of the most important contributions of Orthodox theology to ecotheology consists in its understanding of matter as an expression of the divine rationality. The logoi of the world are connected with the divine Logos and have an inner aspiration towards communion with God. Maximus Confessor’s view of the material world as potential church leads to a cosmic ecclesiology with direct significance for the overcoming of our contemporary ecological crisis. His theology of creatio originalis and of the new creation as transfigurated universe allows us to speak about the theological dignity of matter as the ‘home of God’, as well as a field of dialogue between creator and human beings. The Orthodox spirituality, as spirituality of theosis, of the transfiguration of matter through the indwelling of the Holy Spirit is deeply ecological and, at the same time a source for a culture of healing communication, dialogue, love and respect of the ecosystems as expression of God’s rationality.