可持续性不是一种趋势；而是我们共同对地球的责任。
The present state of the system of nature is evidently a consequence of what it was in the preceding moment, and if we conceive of an intelligence which at a given instant comprehends all the relations of the entities of this universe, it could state the respective positions, motions, and general effects of all these entities at any time in the past or future.
"Memory is a tricky thing; it can be both a blessing and a curse."
