Progress is impossible without change, and those who cannot change their minds cannot change anything.
——1963年6月25日在西德市政厅柏林墙前的演说
恐惧不是真实的。它是你创造的思想的产物。
你必须愿意为成为你想成为的人而牺牲你现在所拥有的。
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
We have not yet learned to think, but we are learning.