It's extremely difficult to read a speech and sound as if you mean it.
For most of us, when reading, posture changes, the throat tightens and people can tell. Reading is different from speaking, and a different sort of attention is paid.
Before you give a speech, then, you must do one of two things if your goal is to persuade:
Learn to read the same way you speak (unlikely)
To read the full, original article click on this link: Seth's Blog: Your voice will give you away