The two men appear and ask for the secret of life.

Don't you think they have discovered the secret of life?

In this book, I wanted to share the secrets of my life with everybody.

Now was the time for shadow, when the old gave the secret of life to the young.

The secret of life is to find what you do well and enjoy it.

No man could deny that he had found the secret of life.

Every secret of life and the universe was out there.

The terrible face showed the dark secrets of his life.

And so I'm going to trust you with the most important secret of my life.

When asked about the secret of her long life, she said "keeping calm".