bù jīng yī shì , bù zhǎng yī zhì
lit. you can't gain knowledge without practical experience (idiom)
fig. wisdom only comes with experience
不
bù
no; not so
经
jīng
classics
一
yī
one
事
shì
matter
,
,
长
zhǎng
chief
智
zhì
(literary) wise; wisdom