Nagendra Sarma

“In the Purana, we find this description of time, which is hardly the invention of brutish man scrabbling to create the spoke and the ploughshare: The basic unit of life is the nimesha, the instant. Fifteen nimeshas make one kastha, thirty kasthas one kaala, thirty kaalas one muhurta and thirty muhurtas one day. Thirty days is a maasa, a month, which is one day of the gods and ancestors; six maasas make an ayana, two ayanas a year. One human year is a day and a night for the celestials, uttarayana being the day and dakshinayana the night. Three hundred and sixty-five human years make a divine one.”
― Om Swami, The Ancient Science of Mantras: Wisdom of the Sages

“based on my personal experiences. Theoretical exposition is mostly my own but the majority of the base concepts are traditional and time-honored views of remarkable sages who existed before me. Therefore, if you wish to read more on the mantra sadhana, you can check out the following texts that I grew up reading. With a bit of research, you should be able to get your hands on good translations. I know that Hindi translations must be available for most of these books and English translation only for some. This is not your standard bibliography with publishers and translators, for I don’t have much of that information. Nevertheless, I’m sharing with you the names of various books you can read to know more about mantra yoga. In particular, I would like to acknowledge the translation of Mantra Maharnava by Ram Kumar Rai, Mantra Rahasya by Narayandutt”
― Om Swami, The Ancient Science of Mantras: Wisdom of the Sages