‘Is it whole or can it be partial?’
‘Truth’ is either whole or it is not the ‘Truth’ at all.
In Isha Vaasya Upanishad, a part of Yajur Veda, the ultimate ‘Truth’ or ‘Reality’ is explained as “Poorna”.
(The closest English equivalent of poorna would be whole, full or complete and perfect.)
“Om: Poornamadah Poornamidam, Poornaat Poornamudachayate
Poornasya Poorna Maadaaye, Poornameva avashishyate “
ॐ पूर्णमदः पूर्णमिदम् पूर्णात् पूर्णमुदच्यते |
पूर्णस्य पूर्णमादाय पूर्णमेवावशिष्यते |
“That is whole; This is whole
From the wholeness, emerges the whole.
And if we remove wholeness from the whole, the whole still remains whole.”
The ‘Truth, Brahm or God or whatever name we give to the ultimate Reality, is the ‘whole Truth’.
That and this, here and there, now and then, in past or future, everywhere and always the Truth is in its wholeness. From this ‘whole truth’ the whole creation emerges and even though the whole creation has come out of this ‘whole’ the Truth still remains the ‘whole’.
So when we talk about the ultimate reality, there is no such thing as a ‘Partial Truth’.