Without eyes you shall lack light: profess not the knowledge therefore that you have not.
WEB
Sirach 3:25
There is no light without eyes. There is no wisdom without knowledge.
Parallel Translations
Without eyes thou shalt want light: profess not the knowledge therefore that thou hast not.
The medling with suche hathe beguiled many, and an euil opinion hathe deceiued their iudgement.