A wise person makes no effort to conceal a secret. But he does not make an effort to reveal a secret either. For example, you do not talk about menstruation, death, etc. to a five-year-old, but as they grow older these things are not hidden from them any more. They become known as a matter of course.
An unenlightened one tries to protect a secret; and he also reveals the secret at the wrong time, to the wrong person, in the wrong place and makes a big fuss about secrets. Trying to protect a secret causes anxiety and discomfort. An ignorant one is not comfortable with a secret, whether revealed or unrevealed, but the wise one is comfortable with a secret whether revealed or unrevealed!