“Buddhism … is neither [a philosophy nor] a religion in the sense in which that word is commonly understood, for it is not "a system of faith and worship owing any allegiance to a supernatural being."”

In an ""Why I like Buddhism and how it is useful to the world in its present circumstances" BBC (May 1956) http://www.ambedkar.org/Babasaheb/Why.htm

Source: Rules of Sociological Method, 1895, p. 75

Source: The Martyrdom of Man (1872), Chapter IV, "Intellect", p. 385.

1981, Murtad ki Saza Islami Qanun Mein, Sayyid Abul A’la Maududi, page 32, Lahore Islamic Publications Ltd, 8th edition.
After 1970s

1978, Towards Understanding Islam, Chapter 7, Lahore, Pakistan.
1970s

Address to the Society for Psychical Research (1897)
Context: These rays, as generated in the vacuum tube, are not homogeneous, but consist of bundles of different wave-lengths, analogous to what would be differences of colour could we see them as light. Some pass easily through flesh, but are partially arrested by bone, while others pass with almost equal facility through bone and flesh.
It seems to me that in these rays we may have a possible mode of transmitting intelligence which, with a few reasonable postulates, may supply a key to much that is obscure in psychical research. Let it be assumed that these rays, or rays even of higher frequency, can pass into the brain and act on some nervous center there. Let it be conceived that the brain contains a center which uses these rays as the vocal chords use sound vibrations (both being under the command of intelligence), and sends them out, with the velocity of light, to impinge on the receiving ganglion of another brain. In this way some, at least, of the phenomena of telepathy, and the transmission of intelligence from one sensitive to another through long distances, seem to come into the domain of law and can be grasped. A sensitive may be one who possesses the telepathic transmitting or receiving ganglion in an advanced state of development, or who, by constant practice, is rendered more sensitive to these high-frequency waves. Experience seems to show that the receiving and the transmitting ganglions are not equally developed; one may be active, while the other, like the pineal eye in man, may be only vestigial. By such an hypothesis no physical laws are violated; neither is it necessary to invoke what is commonly called the supernatural.

91912), p. 618.
An encyclopedia of freemasonry and its kindred sciences, (1912)

"The Decline and Fall of Buddhism", in Dr. Babasaheb Ambedkar: Writings and Speeches, Vol. III (1987), Government of Maharashtr­a, p. 229 https://books.google.com/books?id=18W1AAAAIAAJ&q=%22the+mission+to+destroy+Buddhism.+Islam+destroyed+Buddhism+not+only+in+India+but+%22&dq=%22the+mission+to+destroy+Buddhism.+Islam+destroyed+Buddhism+not+only+in+India+but+%22&hl=en&sa=X&ved=0ahUKEwiCrd-YwL7LAhUGbj4KHVa2DekQ6AEIIzAB

Source: The Political Thought of Abdullah Ocalan (2017), Liberating Life: Women's Revolution, p. 69