Women are the largest untapped reservoir of talent in the world.
Libraries are reservoirs of strength grace and wit reminders of order calm and continuity lakes of mental energy neither warm nor cold light nor dark.
You read a script and its based on 'Reservoir Dogs' and 'Pulp Fiction' and it goes right in the bin.
No matter how full a reservoir of maxims one may possess and no matter how good one's sentiments may be if one has not taken advantage of every concrete opportunity to act one's character may remain entirely unaffected for the better.
He who has faith has... an inward reservoir of courage hope confidence calmness and assuring trust that all will come out well - even though to the world it may appear to come out most badly.