Garret FitzGerald was educated at the Jesuit Belvedere College and University College Dublin ( UCD ) , from which he graduated with a Bachelor of Arts degree in 1946 , later returning to complete a Ph. D. which he obtained in 1968 . FitzGerald was educated at the Jesuit Belvedere College and University College Dublin ( UCD ) , from which he graduated with a Bachelor of Arts degree in 1946 , later returning to complete a Ph. D. which he obtained in 1968 .