Thought isn’t controlled, only witnessed. We perceive it through the sense which we identify most intimately with; the mind. In the same way that an eye perceives light, the mind perceives thoughts.
People’s nature tends to be similar to the nature which their inherited physical characteristics suggest, probably as a result of the subsequent repeated prejudice which others subject them to due to their appearances. For this reason prejudice is often accurate, because it is that very prejudice which shaped people into what others expect of them, for better or for worse.
Perhaps this is why people who interact with less strangers seem more likely to have surprising dispositions which seem at odds with their appearance.
“To those who do not know mathematics it is difficult to get across a real feeling as to the beauty, the deepest beauty, of nature … If you want to learn about nature, to appreciate nature to the fullest, it is necessary to understand the language that she speaks in.” ~ Richard Feynman