Brevity is the soul of wit.
言贵简洁。
This is especially true when we make a speech.
我们演讲时尤其如此。
The longer it is, the more boring and dull it will become.
讲得愈长，就会变得愈枯燥乏味。
A good speech is always one that is concise and to the point.
一篇好的演讲始终简洁而又切题。