If you teach others to accumulate and be self absorbed, it is because you also, are such a person. WHAT you believe you are, is what others will see. If you assume a leadership position, what you show others, is what they will become. If you hide the truth, it will not shine. But it is better to keep it to yourself than to give it to the undeserving.
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.