Jurgen Moltmann — German Theologian born on April 08, 1926,

Jürgen Moltmann is a German Reformed theologian who is Professor Emeritus of Systematic Theology at the University of Tübingen. Moltmann is a major figure in modern theology and was the recipient of the 2000 University of Louisville and Louisville Presbyterian Theological Seminary Grawemeyer Award in Religion, and was also selected to deliver the prestigious Gifford Lectures in 1984–1985. He has made significant contributions to a number of areas of Christian theology, including systematic theology, eschatology, ecclesiology, political theology, Christology, pneumatology, and the theology of creation... (wikipedia)

A change in external circumstances without inner renewal is a materialist's illusion, as though man were only a product of his social circumstance and nothing else.
Personal, inner change without a change in circumstances and structures is an idealist illusion, as though man were only a soul and not a body as well.
Capitalism, racism and inhuman technocracy quietly develop in their own way. The causes of misery are no longer to be found in the inner attitudes of men, but have long been institutionalized.
In Christian terms, evangelization and humanization are not alternatives. Nor are the 'vertical dimension' of faith and the 'horizontal dimension' of love for one's neighbor and political change.