The capacity for loneliness is like a muscle that must be exercised.
承受孤独的能力就像必须锻炼的肌肉。
——1963年6月25日在西德市政厅柏林墙前的演说
The best ideas come from collaboration, not isolation.
The joy of mathematics lies in the journey of discovery, not just the destination.
I believe that if you show people the problems and you show them the solutions they will be moved to act.