If a man has a teaspoon of the mind, there will be a pride.
一个人若有一茶匙头脑，便会有一份傲气。
Most of what matters in our lives takes place in our absence.
Sustainability is not an option, it's an obligation to future generations.
Un libro es siempre una puerta abierta a otro mundo.
The landscape of string theory is vast and complex, with perhaps 10^500 different possible universes.