THE MIND IS FREE WHEN IT PAYS ATTENTION TO REALITY
If you pay attention to the concept, the mind is busy; but if you’re aware of the seeing, the mind is free. So, it depends on what the mind is paying attention to.
Once, I attended a crowded ceremony. Someone stood next to me and said that he was agitated from paying attention to so many things happening. I didn’t understand then what he was referring to because I was only aware of seeing, only one thing.
The mind is either calm or restless, depending on the object.