Sit in meditation, but do not think. Look only at your mind. You will see thoughts coming into it. Before they can enter, throw these away from your mind until your mind is capable of entire silence.
Stillness is our most intense mode of action. It is in our moments of deep quiet that is born every idea, emotion, and drive which we eventually honor with the name of action ... we reach highest in meditation, and farthest in prayer. In stillness every human being is great; he or she is free from the experience of hostility; she or he is a poet and most like an angel.