A principle may relate to a fundamental truth or proposition that serves as the foundation for a system of beliefs or behavior or a chain of reasoning. They provide a guide for behavior or evaluation.
The concept of blind justice is a moral principle.
Socrates preferred to face execution rather than betray his moral principles.
Portrait bust of Aristotle; an Imperial Roman copy of a lost bronze sculpture made by Lysippos
Lady Justice is an allegorical personification of the moral force in judicial systems. Her attributes are scales, a sword and sometimes a blindfold. She often appears as a pair with Prudentia.
Principle
…The concept of blind justice is a moral principle. A principle may relate to a fundamental truth or proposition that serves as the foundation for a system of beliefs or behavior…
Statue of Lady Justice blindfolded and holding a balance and a sword, outside the Court of Final Appeal, Hong Kong
Lady Justice with sword, scales and blindfold on the Gerechtigkeitsbrunnen in Bern, Switzerland, 1543
Lady Justice seated at the entrance of The Palace of Justice, Rome, Italy
Sculpture of Lady Justice on the Gerechtigkeitsbrunnen [de] in Frankfurt, Germany