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There is a great difference between a good physician and a bad one; yet very little between a good one and none at all.

Arthur Young (1792). “Travels during the years 1787, 1788, and 1789: undertaken more particularly with a view of ascertaining the cultivation, wealth, resources, and national prosperity of the kingdom of France”, p.51
There is a great difference between a good physician and a bad one; yet very little between a good one and none at all.