Innovation in physics often comes from looking at old problems in new ways.
That “democracy” is a somewhat vague term which I cannot define precisely. We ought to say, therefore: “I am fairly certain that it is a good thing if a government has something of the characteristics that are common to the British and American Constitutions,” or something of this sort.
成功投资的关键是尽量减少成本和税收。
每个移民都携带着一个看不见的记忆行李箱。