I was wondering if you could rewrite/rephrase a sentence for me:
"Behind every action a human takes, there is the human mind at work."

Look at each thing a person does.
You can see that it is the result of some kind of thinking.

Behind every human action the mind is at work.

Behind every human action their mind is at work.

Behind every human action their mind has been at work.

Every human action is preceded by the mind in action.
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how can i rewrite this sentence- the pilot told me an alex about the river.
The pilot told me and Alex about the river.
the pilot told us about the river

the pilot pointed at the river below (ups, I got a bit carried away... but, depending on the situation it could be also

then the pilot said that (we approached the river, there is a river below, there would be a river on the way... etc)
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When our human minds are hard at work,that is what controls all our actions