Epistle to the Son of the Wolf — Paragraph 49
Source (Persian)
فی الحقيقه کنز حقيقی از برای انسان علم اوست و اوست علّت عزّت و نعمت و فرح و نشاط و بهجت و انبساط * طوبی لمن تمسّک به و ويل للغافلين *
Translation
In truth, knowledge is a veritable treasure for man, and a source of glory, of bounty, of joy, of exaltation, of cheer and gladness unto him. Happy the man that cleaveth unto it, and woe betide the heedless.