We go to the gymnasium and the swimming-school to see the power and beauty of the body; there is the like pleasure, and higher benefit, from witnessing intellectual feats of all kinds; as feats of memory, of mathematical combination, great power of abstraction, the transmutings of the imagination, even versatility and concentration, as these acts expose the invisible organs and members of the mind, which respond, member for member, to the parts of the body. For we thus enter a new gymnasium, and learn to choose men by their truest marks, taught, with Plato, "to choose those who can, without aid from the eyes or any other sense, proceed to truth and to being." Foremost among these activities are the summersaults, spells, and resurrections wrought by the imagination. When this wakes, a man seems to multiply ten times or a thousand times his force. It opens the delicious sense of indeterminate size, and inspires an audacious mental habit. We are as elastic as the gas of gunpowder, and a sentence in a book or a word dropped in conversation sets free our fancy, and instantly our heads are bathed with galaxies, and our feet tread the floor of the pit. And this benefit is real, because we are entitled to these enlargements, and, once having passed the bounds, shall never again be quite the miserable pedants we were. The high functions of the intellect are so allied that some imaginative power usually appears in all eminent minds, even in arithmeticians of the first class, but especially in meditative men of an intuitive habit of thought. This class serve us, so that they have the perception of identity and the perception of reaction. The eyes of Plato, Shakspeare, Swedenborg, Goethe, never shut on either of these laws. The perception of these laws is a kind of meter of the mind. Little minds are little, through failure to see them.