Ralph Waldo Emerson said this quote

It facilitates labor and thought so much that there is always the temptation in large schools to omit the endless task of meeting the wants of each single mind, and to govern by steam. But it is at frightful cost. Our modes of Education aim to expedite, to save labor; to do for masses what cannot be done for masses, what must be done reverently, one by one: say rather, the whole world is needed for the tuition of each pupil.