Sirach 21:18
Ben Sira, Ecclesiasticus16 A fool's chatter is like a burden on a journey, but delight is found in the speech of the intelligent. 17 The utterance of a sensible person is sought in the assembly, and they ponder his words in their minds. 18 Like a house in ruins is wisdom to a fool, and to the ignorant, knowledge is talk that has no meaning. 19 To a senseless person education is fetters on his feet, and like manacles on his right hand. 20 A fool raises his voice when he laughs, but the wise smile quietly.
Origen Contra Celsum 7.12
Against CelsusHe thinks, besides, that those who support the cause of Christ by a reference to the writings of the prophets can give no proper answer in regard to statements in them which attribute to God that which is wicked, shameful, or impure; and assuming that no answer can be given, he proceeds to draw a whole train of inferences, none of which can be allowed. But he ought to know that those who wish to live according to the teaching of sacred Scripture understand the saying, The knowledge of the unwise is as talk without sense, and have learned to be ready always to give an answer to every one that asks us a reason for the hope that is in us.
Notes and References
"... The Hebrew of Ben Sira was not included in the Jewish biblical canon. Testimony to its survival, however, is found in the numerous quotations of the book in rabbinic literature. Of course, the medieval manuscripts discovered in the Cairo Genizah constitute prima facie evidence for its continued existence in Hebrew. The Greek translation seems to have been in uential in early Christianity, and it eventually was included in the Christian Old Testament (only to be excised by Protestants in the sixteenth century). Sirach is not cited explicitly in the New Testament, and scholars differ as to how much in uence it had on the New Testament writings. Those who see broad influence have argued for it primarily in Matthew, Luke, some of Paul’s letters and the Epistle of James (compare Harrington, Invitation, p. 90; Schürer, History, vol. III.1, pp. 205–208). In other early Christian literature, Didache 4:5 and Barnabas 19:9 bear a very close resemblance to, and perhaps are taken from, Sirach 4:31. If these texts do depend on Sirach, they would be the earliest examples of direct Christian use of the book. A healthy number of Greek and Latin church fathers, including Clement of Alexandria, Origen, John Chrysostom, Tertullian, Jerome and Augustine, use Sirach in their writings, and as early as Clement of Alexandria Sirach is cited as scripture, demonstrating the high regard the book came to have in Christian tradition ..."
Ryan, Daniel "Sirach (Ecclesiasticus)" in Aitken, J. K. (ed.) T&T Clark Companion to the Septuagint (pp. 410-424) T&T Clark International, 2015