“One sabbath he was going through the cornfields; and as they made their way his disciples began to pluck heads of grain. The Pharisees said to him, ‘Look, why are they doing what is not lawful on the sabbath?’ And he said to them, ‘Have you never read what David did when he and his companions were hungry and in need of food? He entered the house of God, when Abiathar was high priest, and ate the bread of the Presence, which it is not lawful for any but the priests to eat, and he gave some to his companions.’ Then he said to them, ‘The sabbath was made for humankind, and not humankind for the sabbath; so the Son of Man is lord even of the sabbath.’” 
“In all determinations of morality, this circumstance of public utility is ever principally in view; and wherever disputes arise, either in philosophy or in common life, concerning the bounds of duty, the question cannot by any means, be decided with greater certainty, than by ascertaining, on any side, the true interests of mankind. If any false opinion, embraced from appearances, has been found to prevail; as soon as farther experience and sounder reasoning have given us juster notions of human affairs; we retract our first sentiment, and adjust anew the boundaries of moral good and evil.” 
“The felt necessities of the time, the prevalent moral and political theories, institutions of public policy, avowed or unconscious, even the prejudices which judges share with their fellow-men, have had a good deal more to do than the syllogism in determining the rules by which men should be governed. The law embodies the story of a nation’s development through many centuries and it cannot be dealt with as if it contained only the axioms and corollaries of a book of mathematics. In order to know what it is, we must know what it has been, and what it tends to become.” 
“It is clear that each party to this dispute—as to all that persist through long periods of time—is partly right and partly wrong. Social cohesion is a necessity, and mankind has never yet succeeded in enforcing cohesion by merely rational arguments. Every community is exposed to two opposite dangers: ossification through too much discipline and reverence for tradition, on the one hand; on the other hand, dissolution, or subjection to foreign conquest, through growth of an individualism and personal independence that makes cooperation impossible.” 
 Mark 2.23–28 (NRSV).
 David Hume, An Enquiry Concerning the Principles of Morals (Hackett 1983) 19.
 Oliver Wendell Holmes, Jr., The Common Law (Dover 1991) 1.
 Bertrand Russell, History of Western Philosophy (Routledge 2004) 9.