Which is more important, genes or environment?

My opinion is both of them are important. But if I have to choose one of them, I think environment is more important than gene. Even if he has clever parents, human development of personality and intelligence are possible to become not only good but also bad. Environment influences person’s ability. For example, if there are two people who is completely same, there will be differences between people who grow up in city and people who grow up in country. They maybe have the difference in method of the idea and the action. I think I can mention the same things in personality and intelligence. So I consider environment is more important.