行为主义者放在自己面前的规则或衡量标准总是:我能否用"刺激和反应"来描述我所看到的这一行为?
钢铁行业必须拥抱可持续性,才能在21世纪生存下去。
Life is like a journey, don't worry about the destination, but enjoy the scenery along the way and the mood of seeing it.
La palabra es el arma más poderosa que tenemos para cambiar el mundo.