我不活在过去，我专注于现在和未来。
人类行为的伟大程度是由激发它们的灵感来衡量的。
I’m not afraid to be vulnerable, because that’s where strength comes from.
国家是理性的行为者，在无政府状态的国际体系中寻求最大化其权力和安全。
Change starts with a single step, but it takes a collective effort to make it last.
The future of life on Earth depends on our ability to take action. Many individuals are doing what they can, but real success can only come if there is a change in our societies and our economics and in our politics.