Ludwig Boltzmann

The aim of science is to make the world intelligible.

Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution.

The most beautiful thing we can experience is the mysterious. It is the source of all true art and all science.

The important thing is not to stop questioning. Curiosity has its own reason for existence. One cannot help but be in awe when he contemplates the mysteries of eternity, of life, of the marvelous structure of reality. It is enough if one tries merely to comprehend a little of this mystery each day.

The universe is a grand book which cannot be understood unless one first learns to comprehend the language and interpret the characters in which it is written. It is written in the language of mathematics, and its characters are triangles, circles, and other geometrical figures, without which it is humanly impossible to understand a single word of it; without these, one is wandering about in a dark labyrinth.

The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.

The true method of discovery is to have no method.

The scientist does not study nature because it is useful; he studies it because he delights in it, and he delights in it because it is beautiful.

The universe is a vast and complex place, and we are only just beginning to understand it.

If you are a physicist, you must be a philosopher. If you are a philosopher, you must be a physicist.

A mathematician is a blind man in a dark room looking for a black cat which isn't there.

The second law of thermodynamics is the only physical theory that, in the framework of its basic concepts, refers to time in a specific direction.

The whole purpose of the universe is to make hydrogen atoms.

The more I think about it, the more I realize that there is no such thing as a 'simple' experiment.

The only way to learn mathematics is to do mathematics.

The physicist's task is to understand nature, not to conquer it.

The ideal gas law is a lie. All gases are real.

The entropy of the universe tends to a maximum. So does my patience.

The greatest discovery of all time is that the universe is made of atoms.

The only thing that is constant is change.