(noun) A regulation, law, guideline. Example: "All participants must adhere to the rules."
"Integrity has no need of rules."
"Know the rules well, so you can break them effectively."
"It is substantially true, that virtue or morality is a necessary spring of popular government. The rule, indeed, extends with more or less force to every species of free government."
"Hatred does not cease by hatred, but only by love; this is the eternal rule."
"I followed my heart without breaking any rules."
"The great rule of conduct for us, in regard to foreign nations, is, in extending our commercial relations, to have with them as little political connection as possible."
"Madness is something rare in individuals - but in groups, parties, peoples, and ages, it is the rule."
"The first rule is to keep an untroubled spirit. The second is to look things in the face and know them for what they are."
"One thing you should know about me is I never play to lose. Always aim high and rarely obey the rules."
"Make it a rule never to give a child a book you would not read yourself."
"You have to learn the rules of the game. And then you have to play better than anyone else."
"In individuals, insanity is rare; but in groups, parties, nations and epochs, it is the rule."