english: 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.
non_english: Jedan od najvećih izazova u naše vreme jeste pomiriti tri vremenska merila: kratkoročno ekonomsko, uspone i padove na berzi, proračune na kraju godine; srednjoročno vezano za kvalitet života - kakav je kvalitet svakog trenutka našeg života, tokom 10 i 20 godina? - i dugoročno merilo životne sredine.