The right against self-incrimination

IT is unnatural for a person to incriminate himself, and therefore, the Constitution guarantees that no person can be compelled to admit to the commission of an offense nor to render testimony that provides evidence against himself.

So it is that the Bill of Rights of our present Constitution guarantees the right of "any person under investigation for the commission of an offense" to remain silent (Section 12) and the right not to be "compelled to be a witness against himself." (Section 17).