Ludwig Boltzmann

The true sign of intelligence is not knowledge but imagination.

The only source of knowledge is experience.

The most incomprehensible thing about the world is that it is comprehensible.

The important thing is to never stop questioning.

The more I learn, the more I realize how much I don't know.

The only true wisdom is in knowing you know nothing.

The unexamined life is not worth living.

I am not a product of my circumstances. I am a product of my decisions.

The best way to predict the future is to create it.

The mind is everything. What you think you become.

If you are so convinced that the atomic hypothesis is wrong, then you should be able to explain all phenomena without it.

I am conscious of being only a single individual, struggling against the current of the times.

The struggle for existence is not a struggle for raw materials, but for entropy.

My life has been a constant struggle between the desire for truth and the desire for peace.

The second law of thermodynamics is the most profound law of nature.

I am a musician, and my instrument is the universe.

The greatest joy of my life has been to understand the world.

The atomists are the true poets of nature.

I feel like a lonely pioneer, exploring an unknown land.

My work is my life, and my life is my work.