The best art comes from the heart, not the mind.

Change is good. Change is progress. Without change, nothing would ever improve.

最可持续的森林是在保持其生态完整性的同时为人们提供价值的森林。

The present state of the system of nature is evidently a resultant 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.

像我们这样的人在这样的情况下，我们必须确保他们看到我们。