We should consider for a moment how much the Christian understanding of life is based on the reality of "Grace"; let us also recall that the Holy Spirit Himself is called "Gift"; that the greatest Christian teachers have said that the Justice of God is based on Love; that something given, something free of all debt, something undeserved, something not-achieved - is presumed in everything achieved or laid claim to; that what is first is always something received — if we keep all this before our eyes, we can see the abyss that seperates this other attitude from the inheritence of Christian Europe.

p. 20 - Leisure, the Basis of Culture (1948)