Sri Aurobindo
Letters of Sri Aurobindo
Volume III - Part 4
It is only the supermind that has an absolute freedom from error. The Overmind presents truths in all sorts of arrangements 
all of which taken together presents something like the whole truth – but these again are reflected in you in the terrestrial consciousness or conveyed to your terrestrial consciousness by the descent from the higher planes; but in receiving it the terrestrial consciousness can make mistakes in interpretation, in understanding, in application, in arrangement.