What is motivation?
Is it when a speaker gets up in front of a crowd and tells them that they great, amazing people that are capable of doing anything they set their mind to? Is it when your employer offers a good health plan? Does it come from posters on the wall touting a one word description of a person who climbed a mountain as an "achievement"?
After that speaker, did you set out to do whatever you set your mind to? Did you work harder because of your health plan? Did you set out to achieve more because someone climbed a mountain*?