Donald Trump’s son, Donald Trump Jr., lamented on Monday that his opinion is “discredited” as a billionaire’s son.

“Now, listen, in this country I’m the son of a billionaire, I can’t even have an opinion anymore,” he said on Breitbart News Daily, according to audio published by Buzzfeed News. “I could be Albert Einstein and they would discredit me as a horrible scientist. It doesn’t matter.”

Donald Trump Jr. explained how his father raised his children to be normal.

“He made us understand the value of a dollar,” he said. “He made us work and it wasn’t like you start off and you’re, all of a sudden you’re the CEO of the organization.”

“You know, we weren’t trust fund babies. We were very fortunate. We experienced great things, but we were spoiled the right way. We were spoiled with great education, great experiences, we weren’t spoiled with cash. You know, like I said, I’m the only son of a billionaire who can drive a D10 just because those were the jobs that I had growing up,” he continued.

Trump Jr. said that working his way up the ladder gave him a better understanding of the family business.

“You can’t talk theory in practice in deals-making. You have to understand it and understand it fundamentally. It’s not a spreadsheet. It’s life,” he said.