Within us all there are wells of thought and dynamos of energy which are not suspected until emergencies arise. Then oftentimes we find that it is comparatively simple to double or treble our former capacities and to amaze ourselves by the results achieved. Quotas, when set up for us by others, are challenges which goad us on to surpass ourselves. The outstanding leaders of every age are those who set up their own quotas and constantly achieve them.
Thomas J. Watson