Leisure is a form of silence which is the prerequisite of the apprehension of reality: only the silent hear and those who do not remain silent do not hear. Silence, as it is used in this context, does not mean "dumbness" or "noiselessness"; it means more nearly that the soul's power to "answer" to the reality of the world is left undisturbed. For leisure is a receptive attitude of mind, a contemplative attitude, and it is not only the occasion but also the capacity for steeping oneself in the whole of creation ... When we really let our minds rest contemplatively on a rose in bud, on a child at play, on a divine mystery, we are rested and quickened as though by a dreamless sleep ... It is in these silent receptive moments that our souls are sometimes visited by an awareness of what holds the world together.
~ from LEISURE, THE BASIS OF CULTURE by Josef Piper
I think the most essential thing in one's life is silence. What is silence? We think if we are quiet, we are silent. But we must come to silence without desire and wanting, otherwise we are not silent.