" If you just learn a single trick, Scout, you'll get along a lot better with all kinds of folks. You never really understand a person until you consider things from his point of view... Until you climb inside of his skin and walk around in it. " Atticus Finch in " To Kill a Mocking Bird".
Sir, if one can climb inside another's skin and walk around in it, one will be able to know others' thoughts.
If one cannot, never bother to think what they are thinking. Its a sheer waste of time.
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Sir,H G Wells in his novel "Men like God" pictured a world wherein thought-transfer takes place without mediation of spoken or written or printed word and our ancient thought says that many things are communicated in eloquence of silence.There is a say that face is the index of mind.I think all these should help us to read "others thoughts" which are not recorded for communication.If the thoughts of others are recorded then by reading their writings we can know their thoughts.