If you have learned how to disagree without being disagreeable, then you have discovered the secrete of getting along - whether it be business, family relations, or life itself.
— Bernard Meltzer

A gentleman is a man who can disagree without being disagreeable.
Unknown disagreeable quote

The excellency of every art is its intensity, capable of making all disagreeable evaporate.
— John Keats

Reading is not a duty, and has consequently no business to be made disagreeable.
— Augustine Birrell

When we are young we take pains to be agreeable, and when we are old we take pains not to be disagreeable.
— disagreeable quotation by Unknown