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数学是一门活生生的学科,随着新的思想和发现不断演变。
国君自以为神圣聪明,而不去咨询官吏,自以为国家安定强大,而不注重防守,周围的邻国图谋侵略他却不知道戒备。
The labor which it would require to make a single one of these guns by hand would exhaust the patience and perseverance of any ordinary workman.
Psychology should illuminate how we cope with our environment.
我们要敢于梦想,敢于实践,敢于失败,敢于成功。
The documenta is a celebration of the human spirit.