Another chunk of Deus Caritas Est highlights:

The modern age, particularly from the nineteenth century on, has been dominated by various versions of a philosophy of progress whose most radical form is Marxism. Part of Marxist strategy is the theory of impoverishment: in a situation of unjust power, it is claimed, anyone who engages in charitable initiatives is actually serving that unjust system, making it appear at least to some extent tolerable. This in turn slows down a potential revolution and thus blocks the struggle for a better world. Seen in this way, charity is rejected and attacked as a means of preserving the status quo. What we have here, though, is really an inhuman philosophy. People of the present are sacrificed to the moloch of the future—a future whose effective realization is at best doubtful. One does not make the world more human by refusing to act humanely here and now.

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Love is free; it is not practised as a way of achieving other ends. But this does not mean that charitable activity must somehow leave God and Christ aside. For it is always concerned with the whole man. Often the deepest cause of suffering is the very absence of God. Those who practise charity in the Church's name will never seek to impose the Church's faith upon others. They realize that a pure and generous love is the best witness to the God in whom we believe and by whom we are driven to love. A Christian knows when it is time to speak of God and when it is better to say nothing and to let love alone speak. He knows that God is love (cf. 1 Jn 4:8) and that God's presence is felt at the very time when the only thing we do is to love.

Read Deus Caritas Est for yourself here.