做成一件事要有缘分，抓住机遇，准确把握其轻重缓急，会使其尽善尽美；如果时运不济，抓不住机会，那么每做一事，均不得成功。
The elements of consciousness are to be determined by experimental analysis.
世界是一本书，不旅行的人只读了一页。
We don't receive wisdom; we must discover it for ourselves after a journey that no one can take for us or spare us.
数学不是一项观赏性运动。