Likewise, non-Catholics have the possibility of being saved; only God can see into the soul of a (wo)man and see if there exists a reflection of Himself (supernatural Charity), a quality without which we cannot be saved. To receive and maintain this quality of the soul God gave us the Sacraments of the Catholic Church. Could you obtain and maintain this quality of the soul without formal membership in the Christ's Church? Technically yes... but do you really want to bet your soul on it?