It must be done as the free and voluntary act of both parties. (nycdivorcelawyers.com)
You have, by any other voluntary act other than marriage or registration of civil partnership, acquired citizenship of another country. (citizensinformation.ie)
Thus any idealization of the human equation or projection of it as an absolute or ultimate good becomes a voluntary act of illusion, making absolute a level of reality which is patently relative and thus insulating the characteristically human structure of personality from its sensitive frontier where it might otherwise encounter the dimension of spirit, expressive within its own structure, yet not of it. (religion-online.org)