Silence is where we learn to listen, where we learn to see. Holding silence, being held by stillness, people go alone to the wilderness "to stop and see", to renew their vision, to enter the mind ground, to hear the truth, to return to the knowledge of the extensiveness of self and the truth of no self. One seeks solitude to know relatedness. There the unknown, the unarticulated, the unpredictable, the uncontrollable appear as protectors of the present.
The great work of life is not to save the world but to attain God Realization which, by being in the process of doing so, you have a tremendously powerful and positive effect on the world condition and consciousness.