Throughout Rotary's history, several basic principles have been developed to guide Rotarians in achieving the ideal of service and high ethical standards. The Object of Rotary was first formulated in 1910 and adapted through the years as Rotary's mission expanded. The Object of Rotary provides a succinct definition of the organization's purpose as well as the club member's responsibilities. The Object of Rotary is to encourage and foster the ideal of service as a basis of worthy enterprise and, in particular, to encourage and foster: FIRST The development of acquaintance as an opportunity for service; SECOND High ethical standards in business and professions; the recognition of the worthiness of all useful occupations; and the dignifying of each Rotarian's occupation as an opportunity to serve society; THIRD The application of the ideal of service in each Rotarian's personal, business, and community life; FOURTH The advancement of international understanding, goodwill, and peace through a world fellowship of business and professional persons united in the ideal of service.