Public opinion is the thermometer a monarch should constantly consult.
Napoleon Bonaparte

Arguments are extremely vulgar, for everyone in good society holds exactly the same opinion.
Oscar Wilde

In all matters of opinion, our adversaries are insane.
Oscar Wilde

Those convinced against their will are of the same opinion still.
Dale Carnegie

Opinion is the medium between knowledge and ignorance.
Plato

Knowledge is true opinion.
Plato

My psychiatrist told me I was crazy and I said I want a second opinion. He said okay, you're ugly too.
Rodney Dangerfield

We are so vain that we even care for the opinion of those we don't care for.
Marie von Ebner-Eschenbach

Other people's opinion of you does not have to become your reality.
Les Brown

Don't let someone else's opinion of you become your reality.
Les Brown

He never chooses an opinion; he just wears whatever happens to be in style.
Leo Tolstoy

Opinion has caused more trouble on this little earth than plagues or earthquakes.
Voltaire

Where an opinion is general, it is usually correct.
Jane Austen

Vanity and pride are different things, though the words are often used synonymously. A person may be proud without being vain. Pride relates more to our opinion of ourselves; vanity, to what we would have others think of us.
Jane Austen

Nothing is more deceitful than the appearance of humility. It is often only carelessness of opinion, and sometimes an indirect boast.
Jane Austen

There is no maxim, in my opinion, which is more liable to be misapplied, and which, therefore, more needs elucidation, than the current one, that the interest of the majority is the political standard of right and wrong.
James Madison

Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.
Marcus Aurelius

It were better to have no opinion of God at all than such a one as is unworthy of him; for the one is only belief - the other contempt.
Plutarch

For to err in opinion, though it be not the part of wise men, is at least human.
Plutarch

Every day confirms my opinion on the superiority of a vicious life - and if Virtue is not its own reward I don't know any other stipend annexed to it.
Lord Byron