The term "Quaker" refers to members of the Religious Society of Friends, a Christian denomination founded in the 17th century in England. Quakers emphasize direct experience of God, simplicity, peace, integrity, community, and equality. They are known for their silent worship, where individuals sit in silence until moved to speak. Quakers have a strong commitment to social justice and humanitarian efforts. They played significant roles in movements such as the abolition of slavery and the promotion of civil rights. Many Quakers also advocate for nonviolence and environmental sustainability, reflecting their belief in the inherent worth of every person and the interconnectedness of all life.