"At first when I heard about climate change, I was a climate denier. I didn't think it was happening. Because if there really was an existential crisis like that, that would threaten our civilisation, …"

"I have Asperger's, and to me, almost everything is black or white."

"We need to listen to the science."

"Nor does hardly anyone ever mention that we are in the midst of the sixth mass extinction, with about 200 species going extinct every single day."

"Adults keep saying, 'We owe it to the young people to give them hope.' But I don't want your hope. I don't want you to be hopeful. I want you to panic."