Ideas rose in clouds; I felt them collide until pairs interlocked, so to speak, making a stable combination.

Ideas rose in clouds; I felt them collide until pairs interlocked, so to speak, making a stable combination.

思想在云端升起;我感觉它们在碰撞，直到一对相互连接，可以说，形成一个稳定的组合。

-- Henri Poincare 彭卡勒