Here's the full statement:

For every action, there is an equal and opposite reaction.

Let's break down the key parts:

* Action: This refers to the force exerted by the first object on the second object.

* Reaction: This refers to the force exerted by the second object on the first object.

* Equal in magnitude: The forces have the same strength.

* Opposite in direction: The forces push or pull in opposite directions.

Example:

Imagine you push against a wall. You exert a force on the wall (the action). The wall pushes back on you with an equal force (the reaction). That's why you feel the resistance of the wall.

This law is fundamental to understanding how forces interact in the universe. It applies to all objects, from tiny particles to massive planets.