‘Though you should not begrudge anyone the dharma, do not preach it unless you are asked. Even if someone asks, keep silent three times; if the person still asks you from his or her heart, then teach him or her. Out of ten times you may desire to speak, remain silent for nine; as if mold were growing around your mouth. Be like a folded fan in December, or like a wind-bell hanging in the air, indifferent to the direction of the wind. This is how a person of the Way should be. Do not use the dharma to profit at the expense of others. Do not use the way as a means to make yourself important. These are the most important points to keep in mind.’ (Zazen Yojinki)
Oh well. I shall try harder to be like a folded fan in December.