have　been　altogether　deprived　of　these　advantages？　It　is　probable
  that　one　cause　of　this　phenomenon　is　the　warmth　and　equality　of
  weather　in　the　torrid　zone；　which　render　clothes　and　houses　less
  requisite　for　the　inhabitants；　and　thereby　remove；　in　part；　that
  necessity；　which　is　the　great　spur　to　industry　and　invention。
  Curis　acuens　mortalia　corda。　Not　to　mention；　that　the　fewer　goods
  or　possessions　of　this　kind　any　people　enjoy；　the　fewer　quarrels
  are　likely　to　arise　amongst　them；　and　the　less　necessity　will
  there　be　for　a　settled　police　or　regular　authority　to　protect　and
  defend　them　from　foreign　enemies；　or　from　each　other。
  the　End