Authentic prayer is neither a selfish request, nor a mechanical recitation, but is a way of uniting ourselves with God. Freedom is the ability to act significantly. The free act is significant, because it contributes to making us who we are as human beings. Freedom is not merely doing whatever we want. Freedom is not merely the ability to make an arbitrary choice, because there is no freedom if everything that can be chosen is insignificant.
Freedom is the ability to make significant choices.
Marcel believes that this freedom is given to us by God. The Mystery of Being is really less concerned with Being than with Mystery. Mystery is what opens for us a wider view of reality. Marcel shows that mystery is capable of being experienced. His lectures are concerned with existential themes, but his findings make a stimulating and persuasive argument for religious faith.