Proverbs with :M and N

• "Make hay while the sun shines."
• "Make love not war."
• "Man with four balls can't walk."
  • Reference to baseball and its anatomical incorrectness.
• "Many hands make light work."
• Many a little make a mickle
• "Misery loves company."
• "Money for old rope."
  • In the days of wooden-hulled sailing ships, ropes that were worn could be sold for use as calking (pressed between the planks and often covered with tar to prevent seepage), or as filling for fenders, and so the ship's owner was paid even for old rope. These days, we also call this a freebie.
• "Money makes the mare go."
• "Money makes the world go around."
• "Money talks."
  • Possible Interpretation: Here "talks" means "carries weight," in the sense that it is influential.
• "Money talks, bullshit walks."
• "More haste, less speed."

Proverbs with: N  

• "Nature abhors a vacuum."
• "Nature, time, and patience are three great physicians."
• "Necessity is the mother of all invention."
• "Ne'er cast a clout till May be out."
• "Never, Never... allow anyone to persuade you to suspend your common sense."
• "Never put off till (until) tomorrow what you can do today."
• "Never do today what you can put off till (until) tomorrow ."
  • "It was probably a waste of time anyway."
• "Never trouble trouble until trouble troubles you."
• "New brooms sweep clear."
• "New broom sweeps clean."
• "Noblesse oblige."
  • French expression: To be a member of the nobility carries obligations to care for the lower classes.
• "No cows, no cares."
• "No gain without pain."
• "No man can serve two masters."
  • Christian New Testament
• "No man is content with his lot."
• "No news is good news."
• "No pain, no gain."
• "No pain, no injury."
• "No time to waste like the present."
• "Nor pot to piss in." (variant of "neither a pot to piss in nor a window to throw it out.")
• "Nothing ventured, nothing gained."
• "Nothing succeeds like success."