From the same university, he obtained his doctorate in Philosophy.
At this school, he obtained, on 2 July 1880, the bachelor's degree in philosophy.
David left the priesthood and obtained a doctorate in Philosophy.
In 1977 he obtained a degree in literature and philosophy.
Then he obtained a master's degree in philosophy of law from a British university in 1979.
He then obtained a master's degree in philosophy from the University of Toronto.
In 1920, he obtained a university degree in philosophy.
He obtained his doctorate in philosophy from the University of Oxford.
He obtained a doctorate in political philosophy from the University of Ottawa.
From the Gregorian he obtained doctorates in philosophy and theology.
