Pigs know nothing of pearls. They will destroy them and you, also. Keeping the truth you have found to yourself, is not hiding it. BE a good listener, and see to both sides of everything. Avoid being a zealot about any ideal.
Zealots are humorless.
In a world of ignorance, a sense of humor is essential to having a good spiritual countenance, for the devices of men become the chains of slaves. Reality is NOT black and white. It is gray. It is never bad to remain quiet. All the truth of the ages is found in quiet.