In a square, the planets involved want different things at the same time. The Moon may crave security while Uranus demands freedom; Venus looks for harmony while Pluto insists on depth without compromise. That mismatch creates tension, and tension asks for movement.
For a long time the square was read as a negative aspect. Contemporary astrology sees it as one of the most dynamic engines in a chart. Squares often describe where you invest the most effort and, for that very reason, where you learn the most. What starts as an inner tug-of-war can become a skill built with patience.
They can show up as restlessness, recurring doubts, or the sense of standing at a crossroads. Reading them closely helps you understand which two needs are pulling you in opposite directions. The goal isn't to make the tension disappear, but to find creative ways of honoring both sides.