Available energy is the main object at stake in the struggle for existence and the evolution of the world.

- Ludwig Boltzmann

Bring forward what is true, Write it so that it is clear, Defend it to your last breath!

- Ludwig Boltzmann

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 …

- Ludwig Boltzmann

The most ordinary things are to philosophy a source of insoluble puzzles. With infinite ingenuity it constructs a concept of space or time and then f…

- Ludwig Boltzmann

Who ... is not familiar with Maxwell's memoirs on his dynamical theory of gases? ... from one side enter the equations of state; from the other side,…

- Ludwig Boltzmann

It must be splendid to command millions of people in great national ventures, to lead a hundred thousand to victory in battle. But it seems to me gre…

- Ludwig Boltzmann

The life contest is primarily a competition for available energy.

- Ludwig Boltzmann

Philosophy gets on my nerves. If we analyze the ultimate ground of everything, then everything finally falls into nothingness. But I have decided to …

- Ludwig Boltzmann

In my view all salvation for philosophy may be expected to come from Darwin's theory

- Ludwig Boltzmann