What makes a talk more inspiring and motivational?

To find out an answer I explored few of the talks of inspiring speakers. As and when i found out i started writing blogs which are listed below.

   Barack Obama 

I wanted to explore more about Obama’s talks of what makes his talks so impressive to audience and I found some important facts on his talks. I was lot impressed with the entry of Obama, he always enters the stage with a smile and waving hands towards the audience, this itself creates an inspiring atmosphere within the audience. Every words he uses has a clarity which the audience understands easily. Let me light upon Obama's approach to his talks, his voice is smooth but has an intensive factor within it which fires up the audience. He modulates the voice perfectly with a good flow in his talks. He usually stops after every sentence which creates a curiosity in the minds of the audience. The most effective factor of Obama's talks is his enthusiasm and the energy he shows in his talks. It actually motivates the audience and fires up the audience.