translate English to French: He was undoubtedly Canada's most distinguished and able mid-19th-century alienist, a fact recognized by his colleagues, to whom he was known affectionately as "the Nestor of Canadian alienists."
Il est sans nul doute le psychiatre le plus éminent et le plus compétent du milieu du XIXe siècle au Canada, ce que reconnaissent alors volontiers ses collègues qui le surnomment affectueusement le « Nestor des psychiatres canadiens ».