Here the subject is the involuntary influence of one's inner nature on people who are attuned to it. The crane does not need to show itself on a high hill. Even if it lets its call ring out wholly unseen, its young one hears its voice, knows it and answers it. Where there is a joyous mood, a companion also turns up and shares a cup of wine with one.
This is how the echo that sympathy awakens in people shows itself. Where a mood expresses itself truly and purely, where a deed is the clear expression of one's convictions, they work mysteriously at a distance, first on those who are inwardly ready to receive them. But these circles widen. The root of all effect lies within oneself. When this expresses itself in word and deed with complete truth and strength, the effect is great. The effect is only the reflection of what comes forth from one's own heart. Any intention of producing an effect would only destroy that effect.
Confucius says of this: "The noble one stays in their room. If they utter their words well, they meet with agreement from more than a thousand miles away. How much more from close by! If the noble one stays in their room and does not utter their words well, they meet with contradiction from more than a thousand miles away. How much more still from close by! Words go out from one's own person and act on people. Works arise close by and become visible far away. Words and works are, for the noble one, the door hinge and the crossbow's trigger spring. The movement of this hinge and this spring brings honor or disgrace. By words and works the noble one moves heaven and earth. Must one not be careful, then?"