First Law of Thermodynamics

Jemma Simmons: What do you think it's like? 

Leo Fitz: Death? Well, depends on the method, really. Drowning's supposed to be quite pleasant in the end, apparently. Once the water fills up your lungs... 

Jemma Simmons: I mean after. 

Leo Fitz: Ah, yeah. Well, my mum always said that you shouldn't be afraid because it's just like the way life was before you were born which wasn't that bad, was it? 

Jemma Simmons: That's sweet. Though, apparently, I was miserable before I was born upside down, umbilical cord all wrapped around my head. I like to think about the first law of thermodynamics, that no energy in the universe is created and... 

Leo Fitz, Jemma Simmons: None is destroyed. 

[Both smile] 

Jemma Simmons: That means that every bit of energy inside us, every particle will go on to be a part of something else; maybe live as a dragonfish, a microbe, maybe burn in a supernova. And every part of us now was once a part of some other thing - a moon, a storm cloud, a mammoth. 

Leo Fitz: A monkey. 

Jemma Simmons: A monkey. Thousands and thousands of other beautiful things that were just as terrified to die as we are. We gave them new life a good one, I hope. 

Agent of S.H.I.E.L.D 

eps.22