Actually, on matters of faith and morals we must all strive until our last breaths to "agree" with the Church. Fiat.
On these matters we can never give into the mindless pablum of "agreeing to disagree", because that very decision is an act of disunity.
We are called to ever closer union with God and His Church, His mystical Body.
"that they may be one as You Father and I are one"