Volunteer is ready to sacrifice both times. Physical strength and to the public, without hope, what compensation would be mental causing pleasure. Peace and charity boon, charismatic per worker
Volunteering is mentally prepared to sacrifice their time, energy and tenacity to the public without expecting something in return, thus causing a spiritual joy, peace and charity halo to the operator.
Volunteer spirit is ready to sacrifice the time, strength and tenacity to the public without hope of reward is the cause of happiness. Peace and charity charisma to miners.