"Sometimes SILENCE is the best answer to those who doesn't value your words"

Sometimes it's better to sit back and observe not everything needs a reaction. If a person is unable to perceive your point, or in other words, If a person does not wish to understand what you say - Silence is the key. But silence is not always the best answer. It can be used as a tool to avoid argument with the people who don't want to understand. But at times, if a situation occurs that you are the affected ones without committing any mistake, then the silence will never help you in such cases.

So there is nothing called "always".