Since a given system can never of its own accord go over into another equally probable state but into a more probable one, it is likewise impossible to construct a system of bodies that after traversing various states returns periodically to its original state, that is a perpetual motion machine.
Ludwig BoltzmannAvailable energy is the main object at stake in the struggle for existence and the evolution of the world.
Ludwig BoltzmannThe general struggle for existence of animate beings is not a struggle for raw materials, these for organisms are air water & soil, all abundantly available, nor for energy which exists in plenty in the sun and any hot body in the form of heat, but rather a struggle for entropy, which becomes available through the transition of energy from the hot sun to the cold earth.
Ludwig BoltzmannThermodynamics, correctly interpreted, does not just allow Darwinian evolution; it favors it.
Ludwig BoltzmannThe most ordinary things are to philosophy a source of insoluble puzzles. With infinite ingenuity it constructs a concept of space or time and then finds it absolutely impossible that there be objects in this space or that processes occur during this time . . . the source of this kind of logic lies in excessive confidence in the so-called laws of thought.
Ludwig Boltzmann