Thinking as Way to Suprahuman Force:

The
Blessed Buddha once said:
When a Bhikkhu develops the
Ways to Force
that is enriched with concentrated thinking,
constructed by effort, by thinking: thus will thinking,
neither be too slack, nor too tense,
it will neither be constricted internally, nor scattered externally, then he
experiences
both what is in front and what is behind, what is above, so also
below, as by day, so also
at night! Therefore, with a mind all open and unrestricted, he develops the dazzling bright
mind, which is pervaded by its own internal luminosity... However:
What is
thinking
that is too slack?
Thinking
joined with dullness is called
thinking
that is too slack!
What is
thinking
that is too tense?
Restless and agitated thinking is called
thinking
that is too tense
What is
thinking
that is constricted internally?
Thinking
done with lethargy and laziness. This is thinking
that is constricted internally!
What is
thinking
that is scattered externally?
It is thinking
that is distracted and diverted externally urging for the 5 sense pleasures...
This is called
thinking that
is scattered and distracted externally!
How does one dwell experiencing both the front
and what is behind?
The perception of front, back, is well attended to,
and thereby well comprehended,
well considered, and penetrated by understanding... This is called
thinking that
knows both
what is in the front and back!
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, and downwards
from the tips of the hairs, enclosed by 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, slime, spit, snot, joint fluid, and urine...
This is called
thinking that
is below, so above; as above, so below...
How does one dwell as 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 thinking,
constructed
by effort using the same techniques, qualities, features, and aspects, as he trains
during a day. And how, does one dwell with a mind that is all open
and unrestricted, a dazzling
bright mind, which is pervaded by its own luminosity...?
Here, friends, the perception of day-light is well attended and well resolved upon by determination.
It is in exactly this way that one dwells with a mind that is all open, unrestricted, unbounded
and
dazzling bright mind, which is pervaded by its own luminosity...

More
on the 4 Feet of Suprahuman Force!
https://What-Buddha-Said.net/library/DPPN/wtb/g_m/iddhi_paada.htm
https://What-Buddha-Said.net/drops/IV/Suprahuman_Force_I.htm
https://What-Buddha-Said.net/drops/IV/Suprahuman_Force_II.htm
https://What-Buddha-Said.net/drops/IV/Suprahuman_Force_III.htm
https://What-Buddha-Said.net/drops/IV/Suprahuman_Force_IV.htm
https://What-Buddha-Said.net/drops/IV/Suprahuman_Force_V.htm
https://What-Buddha-Said.net/drops/IV/Desire_as_Way_to_Force.htm
https://What-Buddha-Said.net/drops/IV/Energy_as_Way_to_Force.htm
https://What-Buddha-Said.net/drops/IV/thinking_as_Way_to_Force.htm
https://What-Buddha-Said.net/drops/IV/Investigation_as_Way_to_Force.htm

Source (edited extract):
The
Grouped Sayings of the Buddha. Samyutta Nikāya. [V: 278]
section 51: The 4 Forces: Thread 20: Analysis of the Ways.