言うこととすることとは別問題だ。の英語

Saying is quite different from doing.

To say is one thing, and to do is another.

To say is one thing, to do is another.

Saying and doing are two different things.

Talking is one thing, doing is another.

Let me put it in another way.

To say so is already a mistake.

Don't take any notice of what he says.

Don't put it that way.

That's another matter.

That is another matter.

Put it in another way.

To say so is already a mistake.

Let me put it in another way.

That is quite another matter.

That's quite another matter.

If you have something to say, just say it.

That's another question.

He says things on the spur of the moment.

Don’t say it in a way that causes misunderstanding.

in a manner of speaking

That's a whole different matter.

Let me rephrase it.

Don't put it that way.

That's another question.

That's another question―（問題外の意味なら）―beside the question―aside from the subject.

That is a fine excuse.

to speak without reserve

If you insist.

They've no doubt got their grievances, as well.