Walter Benjamin died in 1940, so I guess we should excuse his tendency to gender-specific pronouns:
Regarding the terrible misconception that the quality indispensable to the true critic is “his own opinion”: it is quite meaningless to learn the opinion of someone about something when you do not even know who he is. The more important the critic, the more he will avoid baldly asserting his own opinion. And the more his insights will absorb his opinions. Instead of giving his own opinion, a great critic enables others to form their opinion on the basis of his critical analysis.