"Vedanta and Buddhism: A Comparative Study" (1995) by Professor Helmuth von Glasenapp is a good essay.
First quote from this essay:
In the light of these researches, all attempts to give to the Atman a
place in the Buddhist doctrine, appear to be quite antiquated. We know
now that all Hinayana (sic) and Mahayana schools are based on the
anatma-dharma theory. ... Nirvana being a dharma, is likewise anatta,
just as the transitory, conditioned dharmas ... Nirvana is no
individual entity which could act independently. For it is the basic
idea of the entire system that all dharmas are devoid of Atman, and
without cogent reasons we cannot assume that the Buddha himself has
thought something different from that which since more than 2000
years, his followers have considered to be the quintessence of their
doctrine.
And the conclusion:
Nothing shows better the great distance that separates the Vedanta and
the teachings of the Buddha, than the fact that the two principal
concepts of Upanishadic wisdom, Atman and Brahman, do not appear
anywhere in the Buddhist texts, with the clear and distinct meaning of
a "primordial ground of the world, core of existence, ens realissimum
(true substance)," or similarly.
From here (1973) and here, you can find this summary passage by Professor T. R. V. Murti:
It has been the fashion to consider that the differences between the
Madhyamika śūnyatā and Brahman are rather superficial and even verbal,
and that the two systems of philosophy are almost identical. At least
Professor Radhakrishnan thinks so, and Stcherbatsky's and Dasgupta's
views are not very different. I hold a contrary view altogether: that
in spite of superficial similarities in form and terminology, the
differences between them are deep and pervasive.
From "Madhyamika Buddhism Vis-a-vis Hindu Vedanta (A Paradigm Shift)" (1994-95) by Acarya Dharmavajra:
Hinduism and
Buddhism share a common culture and therefore tend to use the same or
similar words. They do share certain concepts like Karma and
re-incarnation, although their interpretation differ. Hindu concepts
of karma and therefore reincarnation tend to be rather linear whereas
the Buddhist concept is linked with pratityasamutpada. The Theravada
concept of pratityasamutpada is also rather linear but the
Mahayana/Vajrayana concept is more non-linear multi dimentional-multi
leveled-interdependent inter-latched. But all similarities to Hinduism
ends there. The Shunyata of the Buddha, Nagarjuna, Candrakirti is by
no accounts a negative way of describing the Brahman of the Upanishad-
Samkara-Vidhyaranya groups.
And also:
To sum it up, the Vedantic ultimate truth is the existence of an
ultimate existence or ultimate reality. Reality here is used as
something which exists (skt. satta). However, the Buddhist ultimate
truth is the absence of any such satta i. e. ultimately existing thing
or ultimate reality.
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