Though nature is constantly beautiful, she does not exhibit her highest powers of beauty constantly, for then they would satiate us and pall upon our senses. It is necessary to their appreciation that they should be rarely shown. Her finest touches are things which must be watched for; her most perfect passages of beauty are the most evanescent.
John RuskinGive me some mud off a city crossing, some ochre out of a gravel pit and a little whitening and some coal dust and I will paint you a luminous picture if you give me time to gradate my mud and subdue my dust.
John Ruskin