Whether it be in greater growth of the organs which subserve self-maintenance, whether it be in their added complexity of structure, or whether it be in their higher activity, the abstraction of the required materials implies a diminished reserve of materials for race-maintenance.
Bagehot discusses the trade-offs between bodily maintenance and the resources needed for reproduction in complex organisms.
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Political philosophy is still more imperfect; it has been framed from observations taken upon regular specimens of politics and States; as to these its teaching is most valuable.
But it is natural also that persons used to analyse political institutions should look at these anomalies with a little tenderness and a little interest.
At last it strikes you that they grew up, house by house, on the devious tracks of the old green lanes; and if you follow on to the existing fields, you may often find the change half complete.
Our law very often reminds one of those outskirts of cities where you cannot for a long time tell how the streets come to wind about in so capricious and serpent-like a manner.
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