"It is essential that all forms of the liturgy be completely accessible to persons with disabilities, since these forms are the essence of the spiritual tie that binds the Christian community together. To exclude members of the parish from these celebrations of the life of the Church, even by passive omission, is to deny the reality of that community. Accessibility involves far more than physical alterations to parish buildings. Realistic provision must be made for Catholics with disabilities to participate fully in the Eucharist and other liturgical celebrations." Pastoral Statement of US Catholic Bishops on Persons with Disabilities (November 1978, revised 1989), 23.