The poet is referring to a unique and extraordinary moment of silence and stillness in the world. He asks all human beings to stop their restless activities, violence, and constant rush for a short while. This moment would be one where everyone reflects upon their own lives, their pain, and their relationship with others and nature. It would create an atmosphere of unity and peace, free from greed, war, and destruction. Such a pause would help people realize the futility of their endless pursuits and instead focus on values of love, brotherhood, and harmony. Neruda believes this collective silence could bring about a transformation in the world.