嫉妒不是爱的标志，而是对失去有价值关系的威胁的防御。

The best investment you can make is in yourself.

People with a clear sense of identity know who they are and what they stand for. They have a strong sense of self and are not easily swayed by others.

预测未来的最好方法就是创造未来。

可持续发展不再是选择，而是生存的必需。