Note 117 — Chapter IV · Traces of Greek Influence in the Old Testament and in the Apocrypha
Reading edition
This is an exaggeration; what Ben-Sira says is:
Speak, O elder, for it is thy privilege; But be discreet in understanding, and hinder not song.... Speak, O young man, if thou art compelled.... Sum up thy speech, say much in little (xxxii. 3-8, in Hebrew).