Original sentence: At the age of 13, he was sent as a boarder to Coleg Mair, a small Catholic seminary housed in Castell Brychan, Aberystwyth where he was taught Welsh by Saunders Lewis, the dramatist and poet who had lost his lecturer's post at University College, Swansea, following an act of arson at an RAF bombing school that was under construction.He then began higher level studies with the Carmelites in Ireland where he remained until 1948,  At University College, Dublin, he began by reading Welsh in the department headed by John Lloyd-Jones who advised him to switch to Greek and Latin and he graduated with a first in Classics in 1946.When the Philosophy Department at Aberystwyth was closed in 1993 he ceased to teach through the medium of English although continuing to teach Philosophy in the Department of Welsh
Edited sentence: At the age of 13, he was sent as a boarder to Coleg Mair, a small Catholic seminary housed in Castell Brychan, Aberystwyth.He had the great good fortune to be taught Welsh there by Saunders Lewis, the dramatist and poet who had lost his lecturer's post at University College, Swansea, following an act of arson at an RAF bombing school that was under construction.He then began higher level studies with the Carmelites in Ireland where he remained until 1948,  At University College, Dublin, he began by reading Welsh in the department headed by Professor John Lloyd-Jones who advised him to switch to Greek and Latin and he graduated with a first in Classics in 1946.When the Philosophy Department at Aberystwyth was 'rationalized' in 1993 (i.closed) he ceased to teach through the medium of English although continuing to teach Philosophy in the Department of Welsh