translation.en: So one of the main challenges of our times is to reconcile three time scales: the short term of the economy, the ups and downs of the stock market, the end-of-the-year accounts; the midterm of the quality of life -- what is the quality every moment of our life, over 10 years and 20 years? -- and the long term of the environment.
translation.zh: 当今我们面临的主要挑战是 协调三个时间维度的矛盾： 短期的经济发展问题， 如股市的涨跌，年终审计； 中期的生活质量问题—— 未来10年，20年，我们生活的质量如何？ 以及长期的环境问题。