Polemic Advocat :
The nature of thought can be explained by a thought a certain man once had about three hundred years ago.
This man, happened to go by the name Sir Isaac Newton, and I'm referring to the law of action-reaction.
When two objects interact, they create equal and opposite forces on each other.
Thought is simply the mind's reaction to the material world and the material world is simply a reaction to the mind.
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OK , POLEMICAL ADVOCAT' I,m not as well educated as Newton ,but I,ll give it a try and show you my observations.
1- my brain thinks ,(always ),that's how I know I,m still alive
2 - I can think only about the past , past is all that I know .My "knowledge" is an acummulation of my studies/ experiences and it is situated in a place which we call "memory" ( not because of Newton but because of a common agreement among the English speaking population) . My studies /experiences are past , therfore the memory is past. There is nothing new in my memory, it's all past , Mr. Advocat.
3-Thought is a response of my memory ( it comes from my memory ,that's how I see it ,and I don' rely care what Newton might or might not said ).Without my memory I would not beable "think" ,perhaps Newton could , I don't know.
Polemical Advocat: Newton says ,
Thought is simply the mind's reaction to the material world and the material world is simply a reaction to the mind.
4- Agree , but to an extend that that which is not a creation of Nature is a creation of thought.
5- Obviously while sleeping and dreaming the thought is active without presence of the material world but with a full co-operation of your memory.
SO ,these are my observations .