Ludwig Boltzmann

The atomistic theory is the only one which has any chance of being true.

In the end, we will conserve only two things: energy and entropy.

My work on the second law has been misunderstood by many.

The beauty of mathematics lies in its universality.

Doubt is the origin of wisdom.

The H-theorem proves the increase of entropy.

Physics is the study of the harmony of nature.

I regret only that I have but one life to give to physics.

The Maxwell-Boltzmann distribution describes the velocities of molecules.

Observation is the judge that decides between truth and falsehood.

The soul of man is immortal; the life of molecules is eternal.

To understand heat, one must think in terms of probability.

My depression comes from the conviction that my work is worthless.

The world is a machine governed by statistical laws.

Critics are like eunuchs: they know how it's done, but can't do it themselves.

Entropy measures the inexorable march towards disorder.

Science is the poetry of logical ideas.

The future belongs to those who believe in the beauty of their dreams in physics.

The virial theorem applies to gases as well as stars.

I am not a philosopher, but a physicist who thinks.