Because poetry appeals to the heart, also to the intellect, also to the emotion of man. Therefore, many of the Masters in the old times, They favored poetry as a teaching. Or maybe also many of the Masters, They are very artistic themselves. Or maybe after They get enlightened, all Their dormant talents sprung up to life and They know how to write poetry, They paint pictures, dance and sing and all kinds. OK? So, this is one of the talents that has been awakened in some Masters after They get high enlightenment.