Translation of "本当にそう。" in English

本当にそう。

You can't be so sure.

本当にそう思います

I do.

本当にそう思います。

- I do think so.
- I really do think that.
- I really think so.

本当にそうだろうか。

- Is it really the case?
- Is that really true?

でも本当にそうだったら

but my god we could save some healthcare spending

- あなたのいう通りですよ。
- 本当にそうだね。

You can say that again.