One's relationship to nature is a deeply personal experience. To some it's best represented by a walk in the park, or along the river, or under a summer night's sky. To others it reaches its pinnacle in the study of a smell, a sound, the sight of a bird's egg, a gray whale, or lodgepole pine. And while all of nature is laid out before us to appreciate, not all is understood, known, or even knowable. But about human nature we do know at least one thing, which is that it embodies an irrepressible and infinite ability to create, to express, to give, and to share.
Fasting from words, fasting from a volume of speech, being willing to humbly accept the yoke of silence and quietude deprives the tongue of the mastery of our hearts and minds. The tongue is a very useful tool for the art of love and for the art of prayer, but it is also the means by which we afflict others and even our own selves so often. So it must be called into holy obedience.