Think Before You Speak
It is necessary to think before speaking, but you must also think while speaking.
When people think, they reflect on or ponder something. They consider and exercise judgment about a matter. Every communication begins with a thought. Clear thinking is the starting point for clear speaking. You can’t expect something that is fuzzy and unclear in your own mind to be clear and coherent to the people listening to you.
Think about what you want to say and how you want to say it before you say anything important. By taking a little time initially to think over what you want to say, you may save substantial time later when you need to correct something ill advised that you said ...