Alis volat propriis is a Latin phrase used as the motto of U.S. state of Oregon.
The official English version of the motto is "She flies with her own wings" in keeping with the tradition of considering countries and territories to be feminine. However, because the feminine pronoun in the Latin sentences is often omitted and the verb form is not inflected for gender, the phrase could be translated with equal validity as "[one] flies with [one's] own wings" or "[it] flies with [its] own wings".
If macrons are used to indicate the long vowels (standard practice in Latin dictionaries and textbooks), then the phrase becomes Ālīs volat propriīs.
The motto was written in English by judge Jesse Quinn Thornton, and its Latin translation was added to the Territorial Seal adopted by the Oregon Territorial Legislature in 1854. The motto referred to the May 2, 1843 vote by Oregon Country settlers at the third Champoeg Meeting to form a provisional government independent of the United States and Great Britain. During the American Civil War of 1861 to 1865 the motto on the state seal was changed to "The Union." In 1957, the Oregon Legislature officially changed the motto to "The Union" reflecting conflicting views about slavery in Oregon's early days.
In 1987, the legislature readopted the original motto, which it felt better reflected Oregon's independent spirit. The sponsors of the bill that changed the motto back to alis volat propriis included the Oregon Secretary of State and later Governor Barbara Roberts, President of the Oregon Senate Jason Boe, and Senate historian Cecil Edwards.
In 1999, after a short debate in committee, the Oregon House of Representatives took a vote on HB 2269, which would revert the state motto to "The Union". The bill failed to pass on a 30-30 tie vote.
The current Oregon State Seal, which appears on the obverse of the state flag, still features the motto "The Union."
References
Alis Volat Propiis - one year(ish) of livin' in the great state of oregon I did a project in college that I've recreated again this past year- recording one second of video every day for a year and compiling it...