The aim of those who try to control thought is always the same. They find one single explanation of the world, one system of thought and action that … - Gilbert Highet

Nobody has ever thought himself to death. The chief danger confronting us is not age. It is laziness, sloth, routine, stupidity, — forcing their way in like wind through the shutters, seeping into the cellar like swamp water.

Do not try to make the brilliant pupil a replica of yourself.

These are not books, lumps of lifeless paper, but minds alive on the shelves. From each of them goes out its own voice, as inaudible as the streams of sound conveyed by electric waves beyond the range of our hearing; and just as the touch of button on our stereo will fill the room with music, so by opening one of these volumes, one can call into range a voice far distant in time and space, and hear it speaking, mind to mind, heart to heart.