He spent his whole life embodying what responsibility means.
Tips
usage
诠 rarely stands alone in modern Chinese — it almost always appears as part of 诠释 (quánshì, "to interpret / to embody") or 诠注 ("to annotate"). 诠释 is especially fashionable in arts criticism: "actor X 完美诠释 the role of Y" = "actor X perfectly embodied the role of Y."
Left speech radical — the side form of 言 compressed to a two-stroke vertical. Anchors 诠 in the discourse family alongside 说, 论, 译, 释. The radical tells you the character names an act of explaining, glossing, or annotating in words.
Right 全 supplies the sound quán exactly, no tone shift. It also lends a semantic flavour: 全 means 'complete, exhaustive,' and 诠 names exactly the kind of explanation that aims to be exhaustive — a full annotation rather than a passing remark.