Yes, Phoenix, they do. Indeed they exercise it every day in order to survive; to live in this world of ours. Some things are challengeable, but many aren't. If you keep walking the street naked, sooner or later, someone will pick you up, a policeman, most likely.
Atheist have Hearts like you and me, and some better Hearts or should I say more mature hearts. They care for their loved ones; humanity; offer to good causes.... A cold Heart cannot do these things.
I hope that you know, though, that Spirituality is higher than the moral law, which can and has often been broken, for a Higher Cause.