Barnes was known to harbor certain heretical opinions on the subject of operating systems.

There is debate within the legal community about the desirability of designating certain judicial opinions as without precedential value.

The Author, although unknown, displays certain partisan opinions of some events.

Third, how can a speaker or writer successfully communicate certain opinions and attitudes without explicitly putting them into words?

If one wants to visit this country and represent certain opinions, then they are given the chance, provided they do not break the law.

That no matter what, there are some people who are going to have certain opinions about you, whether they know you or not.

The notion that certain opinions cannot safely be allowed a hearing is growing.

However, the compromise is a step in the right direction, even if I have certain opinions on, for example, the extent of the employer's reporting obligations.

I speak for myself and all those of us who share certain opinions.

As for this re-birth, it was not an opinion, but known and certain.