Proverbs are simple and concrete sayings popularly known and repeated, which express truths, based on common sense or the practical experience of humanity. They are often metaphorical. A proverb that describes a basic rule of conduct may also be known as a maxim. If a proverb is distinguished by particularly good phrasing, it may be known as an aphorism. Medieval Latin has played a considerable role in distributing proverbs across Europe, although almost every culture has examples of its own.