maxim
A short saying that shares a general rule or wisdom.
A maxim is a short, memorable statement that expresses a general truth or rule about how to live wisely. Think of it as concentrated wisdom in a single sentence. “Look before you leap” is a maxim reminding you to think before acting. “Honesty is the best policy” is a maxim about telling the truth.
Maxims come from centuries of human experience. People noticed patterns in life (acting rashly leads to trouble, lying creates more problems than it solves) and distilled those observations into brief, catchy phrases that are easy to remember and share. Benjamin Franklin filled Poor Richard's Almanack with maxims like “Early to bed and early to rise makes a man healthy, wealthy, and wise.”
What makes something a maxim? Maxims are pithy (short and punchy), general (they apply to many situations, not just one specific case), and have stood the test of time. “Don't forget your jacket” is specific advice for today. “A stitch in time saves nine” (meaning fix small problems before they become big ones) is a maxim because it captures a principle that applies across many situations.
Your grandmother might have favorite maxims she quotes when teaching you something important. Scientists and leaders often have maxims that guide their work. The key is that maxims are practical wisdom you can actually use when facing real decisions, offering guidance that has proven valuable across generations.