By subsidiarity is meant the principle that responsibilities should be devolved to the lowest viable level – the individual if possible. This stems directly from the Christian concept that the individual is of overriding importance because the individual is unique, born with free will, and is of infi nite value to God. The principle of subsidiarity is therefore rooted in a Christian understanding of the nature of the human person made in the image of God. By solidarity is meant the idea that no man is an island, and that mankind has the need and duty to bind together in common action to achieve aims that cannot be achieved by single individuals. Subsidiarity then requires that the smallest possible level of communality necessary to achieve a particular end should be employed. Action at state level is essentially a last resort.

Denis O'Brien