We are what we think

As I truly enjoyed The Way Things Are, I buy Teachings of the Buddha for another dose of Buddhist wisdom. Buddha seems to concur with Sivananda. He writes:

"We are what we think.
All that we are arises with our thoughts.
With our thoughts we make the world.
Speak or act with an impure mind
And trouble will follow you
As the wheel follows the ox that draws the cart.

We are what we think.
All that we are arises with our thoughts.
With our thoughts we make the world.
Speak or act with a pure mind
And happiness will follow you
As your shadow, unshakable."