The principles of right and wrong that are accepted by an individual or a social group(noun)
The principle that conduct should be moral(noun)
WordNet. Princeton University. 2010.
Use "moral principle" in a sentence
"It is certain they have not the assistance of letters, or those means of education in the schools of philosophy, where the virtuous sentiments and actions of the most illustrious characters are recorded, and carefully laid before the youth of civilized nations: therefore this moral principle must be innate, or they must be under the immediate influence and guidance of a more divine and powerful preceptor,"
"Christ is the active, forceful embodiment, sat in eternal enthronization in the bosom of God, as the only possible moral principle of His universal empire."
"Their power was only requisitory, and these requisitions were addressed to the several Legislatures, to be by them carried into execution, without other coercion than the moral principle of duty."