matter of opinion, a

Idioms  

1. A question on which people hold different views, as in I rather like that design, but really, it's a matter of opinion, or The quality of that new stock issue is a matter of opinion. This expression was first recorded in 1843.

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Example Sentences

What neither is nor is not, that which fluctuates and changes, is the subject matter of opinion, a state between knowledge and ignorance.

From The World's Greatest Books — Volume 14 — Philosophy and Economics by Hammerton, John Alexander, Sir

He saw that beauty is not a matter of opinion, a decision of love's, but a happening to be regular or curvilinear or warm of color or hospitable in expression.

From We Can't Have Everything by Hughes, Rupert