in Thoreau’s Journal:

Not a fish can leap or an insect fall on it but it is reported in lines of beauty—in circling dimples—as it were the constant welling up of its fountain—the gentle pulsing of its life—the heaving of its breast.

The thrills of joy & those of pain are indistinguishable. How sweet the phenomena of the lake—! Everything that moves on its surface produces a sparkle. The peaceful Pond!