Terms for subject General containing of own volition

English	Russian
he agreed of his own volition	он добровольно согласился
he wasn't fired – he left of his own volition	его не уволили – он ушёл добровольно
of one's own volition	по собственному желанию
of own free will and volition	свободно и своей волей (consent was not given of one's own free will and volition, making the contract voidable. Alexander Demidov)
of one's own free will and volition	свободно, своей волей (Deserting constitutes an act of reneging on the contract one entered into of one's own free will and volition. Alexander Demidov)
of one's own volition	по своей прихоти
of one's own volition	по своей воле (capricolya)
of one's own volition	по собственному желанию (capricolya)
of one's own volition	по собственной воле (Alexander Demidov)
of one's own volition	по своей доброй воле