mental current...

"To direct the mental current towards the basic unity
of all things

and to divert it from the observation of
differences is 'Observance" (_niyama_);

therein lies
transcendent bliss.

It should be practiced regularly
by the wise."


_Tejo-bindu Upanishad_, 1.18
in Whitall N. Perry
_A Treasury of Traditional Wisdom_
Varanasi: Indica, 1998 (1971). p. 153