Robert Koch

The more we learn about bacteria, the more we realize their complexity.

The prevention of disease is far more important than its cure.

If my work has any value, it lies in the method, not in the result.

The microbes are always there; it is the soil that changes.

A doctor must be able to do two things: see microscopically and think logically.

I have worked like a man possessed, but not for fame or money.

The fight against tuberculosis is not a question of science alone, but of social reform.

The fight against tuberculosis is hopeless unless we attack the germ directly.

The bacillus is not the sole cause of tuberculosis.

The idea that diseases of humans and animals are fundamentally different is erroneous.

The study of bacteria has opened up a new world of knowledge, and it is a world full of wonders.

As long as we do not know the cause of a disease, we can do nothing for its prevention.

The tubercle bacillus is the cause of tuberculosis.

It is not the individual that is the target of disease, but the species.

The fight against infectious diseases is the most important task of medicine.

I have devoted my life to the study of bacteria, and I have found it to be a most rewarding pursuit.

The methods of bacteriological research are simple, but they require great patience and precision.

It is a great satisfaction to know that my work has contributed to the well-being of humanity.

The discovery of the cholera bacillus was a very exciting moment in my career.

We must not rest until all infectious diseases are conquered.