A smooth sea never made a skilled sailor.
平静的海面从未造就过熟练的水手。
I'm not perfect, I don't claim to be, and I don't expect anyone to be.
我们行业的创新并不总是意味着高科技,有时是把基础工作做得更好。
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.