Quote by Oliver Wendell Holmes
In walking, the will and the muscles are so accustomed to working together and performing their task with so little expenditure of force that the intellect is left comparatively free.
Summary
This quote suggests that walking is a task that requires little conscious effort, as the will and muscles have become so accustomed to working together efficiently. As a result, the mind is left relatively unoccupied and free to focus on other thoughts or tasks. Essentially, walking becomes a mindless activity that allows the intellect to wander and explore other ideas or engage in deep thinking.