Where does rain come from? It comes from all the dirty water that evaporates from the earth, like urine and the water you throw out after washing your feet. Isn't it wonderful how the sky can take that dirty water and change it into pure, clean water? Your mind can do the same with your defilements if you let it.
Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so. You must not lose faith in humanity. Humanity is an ocean if a few drops of the ocean are dirty, the ocean does not become dirty.
A mighty mass of brick, and smoke, and shipping, Dirty and dusty, but as wide as eye Could reach, with here and there a sail just skipping In sight, then lost amidst the forestry Of masts; a wilderness of steeples peeping On tiptoe through their sea-coal canopy; A huge, dun cupola, like a fools-cap crown On a fool's head - and there is London Town.
The worst readers are those who behave like plundering troops: they take away a few things they can use, dirty and confound the remainder, and revile the whole.