Six at the beginning means:
A dangerous enterprise, such as the crossing of a great stream, is made much more difficult if many claims and considerations have to be taken into account. On the other hand, the task is easy if it is attended to quickly and simply. Therefore the unassuming attitude of mind that goes with modesty fits a man to accomplish even difficult undertakings: he imposes no demands or stipulations but settles matters easily and quickly. Where no claims are put forward, no resistances arise.