The Blessed Buddha once said: When a Bhikkhu develops the Ways to Force that is enriched with concentrated Energy, constructed by effort, by thinking: In this way will my Energy, neither be too slack nor too tense, it will neither be constricted internally, nor scattered externally, then he dwells experiencing both what is in front & what is behind, so above, so also below, so by day, so also at night! Therefore, with a mind all open & unrestricted, he develops the dazzling bright mind, which is pervaded by luminosity... However: What is Energy that is too slack? Energy joined with indifference. This is Energy, that is too slack... What is Energy that is too tense? It is restless & agitated Energy. That is Energy, that is too tense... What is Energy that is constricted internally? It is Energy joined with lethargy & laziness. Inwardly choked! What is Energy that is scattered externally? Energy directed & diverted externally for the 5 sense pleasures... This is called Energy that is scattered & distracted externally... How does one dwell experiencing both the front & what is behind? The perception of front, & back, is well attended to, & thereby well comprehended, well considered, & penetrated by understanding... How does one dwell seeing as below, so above; as above, so below? One reviews this very frame of body upwards from the soles of the feet, & downwards from the tips of the hairs, enclosed in skin, as full of many kinds of impurities: There are in this body: Head-hairs, body-hairs, nails, teeth, skin, flesh, sinews, bones, bone-marrow, kidneys, heart, liver, pleura, spleen, lungs, intestines, mesentery, vomit in the stomach, excrement, bile, lymph, pus, blood, sweat, fat, tears, mucus, saliva, snot, fluid of the joints, and urine... So does one come to see both, what is above, and what is below! How does one dwell by day, so at night; as at night, so by day? Here, at night a Bhikkhu trains the Ways to Force, that is enriched with concentrated Energy, constructed by effort, using the same techniques, qualities, features, & aspects, as he trains during the day. And how, does one dwell with a mind, that is all open & unrestricted, a dazzling bright mind, which is pervaded by luminosity...? Here, always the perception of day-light is well attended to & well resolved upon by determination. It is in exactly this way, that one dwell with a mind, that is all open & unrestricted, a dazzling bright mind, which is pervaded by its very own luminosity...
