Fasting in the monastic community is considered an ascetic practice, a “dhutanga” practice. Dhutanga means “to shake up” or “invigoration”. The Buddha, as is well known, emphasized moderation, the Middle Way that avoids extremes, in all things. Fasting is an additional method that one can take up, with supervision, for a time.
For what can be known about God is plain to all, because God is plain to all, because God has shown it to them. Ever since creation of the world His invisible nature, namely His eternal power has been clearly perceived in the things that have been made.
If we cannot envision the world we would like to live in, we cannot work towards its creation. If we cannot place ourselves in it in our imagination, we will not believe it is possible.
