Chinese Wisdom : 一寸光阴一寸金，寸金难买寸光阴
Literally, it means : As every thread of gold is valuable, so is every moment of time.

一 寸 光 阴 一 寸 金 ， 寸 金 难 买 寸 光 阴
yī cùn guāng yīn yī cùn jīn cùn jīn nán măi cùn guāng yīn

寸
cùn
a unit of length / inch / thumb

光
guāng
light / ray / bright / only / merely / to use up


金
jīn
gold / metal / money / the Jurchen Jin dynasty (1115-1234)

难
nán
difficult / problem / difficulty / difficult / not good

一
yī
one / 1 / single / a (article)

阴
yīn
overcast (weather) / cloudy


光阴 means time
As every thread of gold is valuable, so is every moment of time.