Not by force of arms are civilizations held together, but by subtle threads of moral and intellectual principle.

The natural law is an instrument for progress, not a weapon of revolution.

True conformity to the dictates of nature requires reverence for the past and solicitude for the future. 'Nature' is not simply the sensation of the passing moment; it is eternal, though we evanescent men experience only a fragment of it. We have no right to imperil the happiness of posterity by impudently tinkering with the heritage of humanity.

The good society is marked by a high degree of order, justice, and freedom. Among these, order has primacy: for justice cannot be enforced until a tolerable civil social order is attained, nor can freedom be anything better than violence until order gives us laws.

Ordinary human laws are the means - however imperfect - by which we express our understanding of the enduring moral law.

If the state - and within the state, the judiciary particularly - harasses and undermines the Church , in any society the state undoes itself.

Even the wisest of mankind cannot live by reason alone; pure arrogant reason, denying the claims of prejudice (which commonly are also the claims of conscience), leads to a wasteland of withered hopes and crying loneliness, empty of God and man: the wilderness in which Satan tempted Christ was not more dreadful than the arid expanse of intellectual vanity deprived of tradition and intuition, where modern man is tempted by his own pride.