xué ér bù yàn , huì rén bù juàn
study tirelessly, teach with endless enthusiasm (idiom, from Analects)
学
xué
to learn
而
ér
and
不
bù
no; not so
厌
yàn
(bound form) to loathe; to be fed up with
,
,
诲
huì
to teach
人
rén
person; people
倦
juàn
old variant of 倦[juan4]