Various, Lippincott's Magazine of Popular Literature and Science…
“ Every professor-teacher can bear witness to the truism that one hour in the recitation-room is fully equal, in its drain upon the vital energy, to two passed in private study or authorship. The sense of responsibility, we might say, is omnipresent. It does not cease with the recitation: it follows him to his study, and haunts him with the recollection of absurd blunders made by young men who should have done better—the dispiriting reflection that despite his best efforts the stupid and indifferent will not learn. ”
