The Young Men's Christian Association (commonly known as YMCA or simply the Y) is a worldwide organization with more than 57 million beneficiaries from 125 national associations. It was founded on 6 June 1844 by George Williams in London and aims to put Christian principles into practice by developing a healthy "body, mind and spirit". These three angles are reflected by the different sides of the (red) triangle – part of all YMCA logos.The different local YMCAs are voluntarily affiliated through their national organizations. The national organizations in turn are part of both an Area Alliance and the World Alliance of YMCAs. The World Alliance's main motto is: "Empowering young people", and it is headquartered in Geneva, Switzerland.