肯塔基大学心理学教授苏珊娜·塞格斯特罗姆认为，增加乐观情绪的关键在于培养乐观行为而不是积极思维。

Suzanne Segerstrom, professor of psychology at the University of Kentucky, believes that the key to increasing optimism is through cultivating optimistic behaviour, rather than positive thinking.

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26岁的洪都拉斯移民何塞温贝托卡斯特罗在去与美国接壤的维拉克鲁斯州的奥日萨巴的途中，攀上了一列疾驰的货运列车。

Honduran immigrant Jose Humberto Castro, 26, clings to a freight train on his way to the border with the United States in Orizaba in the state of Veracruz November 3, 2010.

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尼古拉斯•塞罗塔先生(Sir Nicholas Serota)是英国泰特美术馆的主管。他将这个美术馆描述成一个充满宝藏的论坛。

Sir Nicholas Serota, director of Britain's Tate galleries, describes the museum as "a forum as much as a treasure box".

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