는 법이다 [Intermediate Grammar]

- 는 법이다

→ An incomplete noun ''standing for 'duty or reason' is used after a modifier of a verb or an adjective '-(으)ㄴ/는' which means a certain condition or an action has no exception or is reasonable by reason.' It is used a lot for a proverb or a fact that everybody can agree on.

Example: 

1. 서두르면 실수하는 법이다. 

    If you hurry you will make mistakes

2. 돈은 가지면 가질수록 더 갖고 싶은 법이에요.
    The more money you have, the more you want to have.

3. 하늘이 무너져도 솟아날 구멍이 있는 법이에요. 
    Every cloud has a silver lining.

4. 노력하는 사람만이 성공하는 법이에요.

    It is true that only those who work hard succeed.

5. 자기 자식은 누구나 다 예쁜 법이에요.

    All her children are beautiful.

6. 눈에서 멀어지면 마음도 멀어진 법이에요.

    It is true that if you are far away, your heart is far too.