"Buddhist scholar, Joanna Macy, writes of visiting a group of monks in Tibet (Macy, 1991). The monks were reconstructing their ancient monastery which had been reduced to rubble by the Chinese. Her heart fell at the magnitude of the task and its almost foolhardy nature. When the monks were asked about Chinese policies and the likelihood of another period of repression, Macy saw that such calculations were conjecture to the monks. Since you cannot see into the future you simply proceed to put one stone on top of another, and another on top of that. If the stones get knocked down, you begin again, because if you don't nothing will get built."
(For those interested in reading more about "The Power of One", try a word search using your favourite search engine.)