The study of nature with a view to works is engaged in by the mechanic, the mathematician, the physician, the alchemist, and the magician; but by all as things now are with slight endeavour and scanty success.
Very few people have a natural feeling for painting, and so, of course, they naturally think that painting is an expression of the artist's mood. But it rarely is. Very often he may be in greatest despair and be painting his happiest paintings.
Of all virtues and dignities of the mind, goodness is the greatest, being the character of the Deity; and without it, man is a busy, mischievous, wretched thing.
The true bounds and limitations, whereby human knowledge is confined and circumscribed,... are three: the first, that we do not so place our felicity in knowledge, as we forget our mortality: the second, that we make application of our knowledge, to give ourselves repose and contentment, and not distates or repining: the third, that we do not presume by the contemplation of Nature to attain to the mysteries of God.