Solemn vow

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There is disagreement among theologians as to whether the distinction between solemn and simple vows is primarily a matter of ecclesiastical administration or theological in nature; the latter position follows the opinion of Thomas Aquinas,[7] holding that a solemn vow is, regardless of its approbation by the Church, a more strict, perfect and complete consecration to God.

[9][11] Aquinas, in support of his view, cited the fact that these two vows alone were considered to make the celebration of marriage invalid.

Once he had received holy orders or made a religious profession, however, any marriage he contracted was considered null and void.

[18] In theory, the recognition as religious for simple vows had universal validity, but in practice, the Roman Curia considered it an exclusive privilege to the Society of Jesus.

It recognized no totally indispensable religious vows and thereby abrogated for the Latin Church the special consecration that distinguished "orders" from "congregations", while keeping some juridical distinctions.

Towards the end of the Second Vatican Council, superiors general of clerical institutes and abbots president of monastic congregations were authorized to permit, for a just cause, their subjects of simple vows who made a reasonable request to renounce their property except for what would be required for their sustenance if they were to depart.

[24] Renunciation of the right to own property is now a matter for the constitutions of the religious institute in question and is associated not with the solemnity of the vows but with their perpetuity.

A perpetually professed religious who wishes to renounce his or her goods either partially or totally according to the norm of proper law and with the permission of the supreme moderator is to do the same.

A professed religious who has renounced his or her goods fully due to the nature of the institute loses the capacity of acquiring and possessing and therefore invalidly places acts contrary to the vow of poverty.