If it can't be expressed in figures, it is not science; it is opinion. ~ Robert Heinlein

He who has an opinion of his own, but depends upon the opinion and taste of others, is a slave. ~ Friedrich Klopstock

Nothing is more conducive to peace of mind than not having any opinions at all. ~ Georg Christoph Lichtenberg

Do not think of knocking out another person's brains because he differs in opinion from you. It would be as rational to knock yourself on the head because you differ from yourself ten years ago. ~ Horace Mann

We are all of us, more or less, the slaves of opinion. ~ William Hazlitt

I had grown tired of standing in the lean and lonely front line facing the greatest enemy that ever confronted man—public opinion. ~ Clarence Darrow

Opinions cannot survive if one has no chance to fight for them. ~ Thomas Mann

The feeble tremble before opinion, the foolish defy it, the wise judge it, the skillful direct it. ~ Jeanne de la Platiere

Those who never retract their opinions, love themselves more than they love truth. ~ Joseph Joubert

They will say you are on the wrong road, if it is your own. ~ Antonio Porchi

A fellow with the smallest mind is the one who is usually most willing to give someone a piece of it. ~ Croft M. Pentz

Patterning your life around other’s opinions is nothing more than slavery. ~ Lawana Blackwell

You are not going to change the minds of people who are looking for attention. ~ Buzz Aldrin, Time 9/6/07

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