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.
The field of space and time is invisible, but in that space and time is the conscious awareness of the mind of the universe. Within it are mystical experience an high loving. The cosmos is being created in its entirety every eco-second. We are working with God in a process of coevolution.