The phrase which I can't understand is:
This knowledge, like so much of my self-knowledge, had come to me in the voice of people I knew, people I loved.
I've problem with the meaning of "voice".
There are some meaning for the word "voice" in Oxford Dictionaries:
the sounds that you make when you speak, or the ability to make these sounds.
the quality of sound you produce when you sing.
the right or ability to express an opinion, to vote, or to influence decisions.
an opinion or wish that is expressed.1
I think the last one (an opinion) fits with the phrase but I am not sure.
So, Could you please tell me what the meaning of "voice" here is?
The full text is here:
From the moment I had first understood that my brother Richard was a boy and I was a girl, I had wanted to exchange his future for mine. My future was motherhood; his, fatherhood. They sounded similar but they were not. To be one was to be a decider. To preside. To call the family to order. To be the other was to be among those called. I knew my yearning was unnatural. This knowledge, like so much of my self-knowledge, had come to me in the voice of people I knew, people I loved. All through the years that voice had been with me, whispering, wondering, worrying. That I was not right. That my dreams were perversions. That voice had many timbres, many tones. Sometimes it was my father’s voice; more often it was my own.
Educated by Tara Westover