It is difference of opinion that makes horse races.

Do not interfere when your opinion is not sought.

So many men, so many opinions.

... one person with their mind made up can shove a lot of folks aroun'!

You're sincere, but in order not to upset your views you avoid talking with people who think differently. You pick your thoughts from conversations with people like yourself, from books written by people like yourself. In physics they call it resonance. You start out with modest opinions, but they match and build each other up to a scale ...

My opinion, my conviction, gains infinitely in strength and success, the moment a second mind has adopted it.

Where there is much desire to learn, there of necessity will be much arguing, much writing, many opinions; for opinion in good men is but knowledge in the making.

Men are never so good or so bad as their opinions.

Those who never retract their opinions love themselves more than they love truth.

If you must tell me your opinions, tell me what you believe in. I have plenty of doubts of my own.

Every new opinion, at its starting, is precisely in a minority of one.

He that complies against his will, Is of his own opinion still, Which he may adhere to, yet disown, For reasons to himself best known.

Men get opinions as boys learn to spell, By iteration chiefly ...

This world belongs to the man who is wise enough to change his mind in the presence of facts.

The horror of our history has purged me of opinions.