Thoreau’s observation on the pitfalls of eating nuts.  However, the upside, as far as I gather, is that nuts are packed with brain-food.

‘It is quite too absorbing; you can’t read at the same time, as when you are eating an apple.’

Source: Henry David Thoreau,The Journal 1837-1861, 15 December 1856, Damion Searls (ed.), preface by John R. Stilgoe (New York: New York Review Books, 2009), p. 427

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