Maternity is a matter of fact, paternity is a matter of opinion.

No matter how bad a child is, he is still good for a tax deduction.

Man is more likely to believe an opinion that he wanted to hear … than a fact that he wishes was an opinion.

If we have data, let’s look at data. If all we have are opinions, let’s go with mine.

Facts are nothing more than mutually agreed upon opinions.

Interdependence is a fact, it's not an opinion.