
There is
Equanimity both regarding live beings, and dead things.
There is Equanimity both regarding all internal, and external
phenomena.
There is Equanimity both regarding all past, present, and future
states.
There is Equanimity both regarding all mentality, and all
materiality.

The Buddha
once said:
What
mental fermentations (āsava)
should be overcome by development?
If a Bhikkhu by alert and
rational attention develops the
equanimity
link
to awakening based on seclusion, disillusion, and ceasing,
culminating in full
renouncing relinquishment, then neither can any mental fermentation,
nor
can any fever, or discontent ever arise in him.
MN2 [i 11]

When mind is concentrated, then one
can observe all from aloof equanimity.
The
equanimity link to awakening arises right there. One develops
it, & for
anyone regularly meditating, equanimity gradually completes its
evolution.
MN118 [iii 85]

Further inspirations on the imperturbable
quality of
Equanimity (Upekkhā):
Even is Equanimity,
The 7 Links to Awakening,
Serene Equanimity and Beyond,
Imperturbable Equanimity,
Unshakable Equanimity,
Equanimity Upekkha,
Feeding Equanimity,
Empty Equanimity,
High_and_Alert,
What_is_Wrong,
Safe_Medicine,
Serene_Equanimity,
Divorced_Freedom,
Tatra-Majjhattat,
Exquisite_Equanimity.