Ağız felaketlerin kaynağıdır.

Most of the trouble in our lives, the saying suggests, does not come from what happens to us but from what we say a moment too quickly. A careless remark, a boast, a bit of gossip or a sharp reply can undo a friendship or a reputation, and once the words are out, nobody can call them back. The mouth is small, but it opens the door to big consequences.

The proverb has no known individual author, so it is best read as collective wisdom. It fits a Japanese social outlook that prizes harmony, restraint and sensitivity to how others feel, where holding back is often seen as a sign of maturity. It also echoes the Buddhist ideal of right speech, which asks us to speak truthfully and kindly, and only when it helps. The point is not that we should never speak, but that words deserve the same care as actions.

Today, this might mean pausing before answering an irritating message in a work group chat. Write the angry reply if you must, but leave it unsent overnight. By morning, you will probably say something calmer and more useful, or decide that silence was the better answer.