Things happen for a reason; and the reason is hidden

Things don't always happen for a reason things usually happen because of your reasoning or some one else's.

Things might happen for a reason. But could you please explain me the reason why they happen?

There is no meaning to existence except which we put in it

I'm a believer in karma, and I'm also a believer that things happen for a reason.

I think that things happen for a reason.