4) 𝗜𝗻𝘃𝗲𝘀𝘁𝗶𝗴𝗮𝘁𝗶𝗼𝗻𝘀 by Stuart Kauffman This is a stunning book by someone with deeply original thinking. A way of thinking of biology and systems that suggests that we need more than we have from physics (a 4th law of thermodynamics??).