Hit the Nail Right on the Head

Etymology:

• The expression is believed to have ancient Roman origin, but later it reached England and became English saying in 16th century. When you hammer something and strike right on the head of the nail, it goes straight in, means you have hit the right target. In the same way if you say something accurate and reach to the rational conclusion of something that is spot on, then it is like you “hit the nail on the head.”