The Religious Society of Friends, commonly known as the Quakers, is a Christian denomination founded in the 17th century in England. Quakers emphasize direct experience of God and the importance of inner spiritual guidance, often referred to as the "Inner Light." They practice silent worship, where individuals gather in silence to seek spiritual insight. Quakers are known for their commitment to social justice, peace, and equality. They have historically been involved in various reform movements, including the abolition of slavery and the promotion of women's rights. Their principles often lead them to advocate for nonviolence and humanitarian efforts worldwide.