Some men are just as sure of the truth of their opinions as are others of what they know.

Some men are just as sure of the truth of their opinions as are others of what they know.

We probably wouldn't worry about what people think of us if we could know how seldom they do.

We probably wouldn't worry about what people think of us if we could know how seldom they do.

For having lived long, I have experienced many instances of being obliged, by better information or fuller consideration, to change read more

For having lived long, I have experienced many instances of being obliged, by better information or fuller consideration, to change opinions, even on important subjects, which I once thought right but found to be otherwise.

The man who never alters his opinion is like standing water, and breeds reptiles of the mind.

The man who never alters his opinion is like standing water, and breeds reptiles of the mind.

It's the opinion of some that crops could be grown on the moon; which raises the fear that it may read more

It's the opinion of some that crops could be grown on the moon; which raises the fear that it may not be long before we're paying somebody not to.

I never drink water because of the disgusting things that fish do in it.

I never drink water because of the disgusting things that fish do in it.

We have no right to express an opinion until we know all of the answers.

We have no right to express an opinion until we know all of the answers.

One accurate measurement is worth a thousand expert opinions.

One accurate measurement is worth a thousand expert opinions.

If you want to know your true opinion of someone, watch the effect produced in you by the first sight read more

If you want to know your true opinion of someone, watch the effect produced in you by the first sight of a letter from him.