My son, gather instruction from thy youth up: so shalt thou find wisdom till thine old age.
WEB
Sirach 6:18
My son, gather instruction from your youth up. Even when you have gray hair you will find wisdom.
Parallel Translations
My son, gather instruction from your youth up: so shall you find wisdom till your old age.
My son, gather instruction from thy youth up: so shalt thou find wisdom till thine old age.