He is personally responsible for the reforms, the opening up of Russia to a considerable extent to western European ideas.

他负起了改革的责任,即俄国对于西欧思想,如此大程度的开放

耶鲁公开课 - 欧洲文明课程节选

And you think that's because our constitution that protects it? I mean do you think... I think to a very considerable extent, it is.

你觉得这要归功于我们宪法,对言论自由的保护？还是说。,我觉得在一定程度上是的。

普林斯顿公开课 - 人性课程节选