Tenemos que aprender a demostrarle nuestra amistad a un hombre cuando está vivo y no después de muerto

But blasting the drummer into the river, though it would have been easy at this range, was not a good way to be inconspicuous.

An epidemic exemplifies system dynamics. The more you can think systemically, the more you can follow the path of coins, art, religion, or disease. Understanding how coins travel along trade routes parallels analyzing the spread of a virus.

Although I cannot move and I have to speak through a computer, in my mind I am free.

Written By Stephen Hawking

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