Agree to disagree is a common English phrase, though some variation of the concept that it conveys exists in nearly every culture on the planet.  It essentially means that no resolution to a disagreement, debate or quarrel will occur and so continuing it is unnecessary, ineffective and pointless.  Therefore, it must come to end by each party tolerating but not accepting the other’s opposing opinion.  Essentially, the only way to find alignment is to agree upon dropping the debate and simply consent to disagreeing (having different opinions on a subject).  Many people within society believe that agreeing to disagree is a mature, conscious and amicable thing to do.  But the reality is quite the opposite.