zuò / xué / wèn / yào / chí / zhī / yǐ / héng / xǔ / duō / shēn / hòu / de / jī / lěi / dōu / jī / yú / hū / wēi

做学问要持之以恒，许多深厚的积累都积于忽微。

Learning requires perseverance, as much deep knowledge is accumulated from tiny beginnings.