“Those who meekly obey laws and rules imposed from the outside—including religious laws—are not moral human beings. The fulfillment of an imposed law is morally neutral. The truly educated make their own wills serve the higher call of justice, empathy and reason.”

Opening lines, p. 104
Variant translations:
What is God-given is called nature; to follow nature is called Tao (the Way); to cultivate the Way is called culture.
As translated by Lin Yutang in The Importance of Living (1937), p. 143
What is God-given is called human nature.
To fulfill that nature is called the moral law (Tao).
The cultivation of the moral law is called culture.
As translated by Lin Yutang in From Pagan to Christian (1959), p. 85
The Doctrine of the Mean

Ten Sermons of Religion (1853), III : Of Justice and the Conscience https://en.wikisource.org/wiki/Ten_Sermons_of_Religion/Of_Justice_and_the_Conscience
Context: Justice is the constitution or fundamental law of the moral universe, the law of right, a rule of conduct for man in all his moral relations. Accordingly all human affairs must be subject to that as the law paramount; what is right agrees therewith and stands, what is wrong conflicts and falls. Private cohesions of self-love, of friendship, or of patriotism, must all be subordinate to this universal gravitation towards the eternal right.

Source: The Doctrine of the Mean, p. 124

"In Defense of Self-defense" I (June 20, 1967)
To Die For The People

Source: On Aggression (1963), Ch. XII : On the Virtue of Scientific Humility
Context: Nobody can seriously believe that free will means that it is left entirely to the will of the individual, as to an irresponsible tyrant, to do or not do whatever he pleases. Our freest will underlies strict moral laws, and one of the reasons for our longing for freedom is to prevent our obeying other laws than these. It is significant that the anguished feeling of not being free is never evoked by the realisation that our behaviour is just as firmly bound to moral laws as physiological processes are to physical ones. We are all agreed that the greatest and most precious freedom of man is identical with the moral laws within him. Increasing knowledge of the natural causes of his own behaviour can certainly increase a man's faculties and enable him to put his free will into action, but it can never diminish his will. If, in the impossible case of an utopian complete and ultimate success of causal analysis, man should ever achieve complete insight into the causality of earthly phenomena, including the workings of his own organism, he would not cease to have a will but it would be in perfect harmony with the incontrovertible lawfulness of the universe, the Weltvernunft of the Logos. This idea is foreign only to our present-day western thought; it was quite familiar to ancient Indian philosophy and to the mystics of the middle ages.

Source: Striking Thoughts (2000), p. 19

2000s, 2002, State of the Union address (January 2002)

Pure Theory of Law (revised ed., 1960), 7. Moral Norms as Social Norms

1960s, Letter from a Birmingham Jail (1963)
Source: Letter from the Birmingham Jail
Context: One may well ask: "How can you advocate breaking some laws and obeying others?" The answer lies in the fact that there are two types of laws: just and unjust. I would be the first to advocate obeying just laws. One has not only a legal, but a moral responsibility to obey just laws. Conversely, one has a moral responsibility to disobey unjust laws. I would agree with St. Augustine that "an unjust law is no law at all."