“There are philosophical issues involved in that about choosing the right discount rate, the value, the future, and things like that which drive it. But its start with the premise that global warming is real and if you're a denier of that fact, then you're not going to find climate change mitigation ”

“Even if there is only one possible unified theory, it is just a set of rules and equations. What is it that breathes fire into the equations and makes a universe for them to describe?”