A quote
We should, therefore, have a guardian, as it were, to pluck us continually by the ear and dispel rumours and protest against popular enthusiasms. For you are mistaken if you suppose that our faults are inborn in us; they have come from without, have been heaped upon us. Hence, by receiving frequent admonitions, we can reject the opinions which din about our ears.
Seneca·Letter 94 (§55)·trans. Gummere