Paul Ehrlich

The fight for health is a fight for human dignity.

I have been called a 'fanatic of work'. I accept this title with pride.

The future belongs to synthetic drugs.

Every disease has its chemical signature.

The goal is a therapia sterilisans magna—a single dose that sterilizes the infection.

Without a clear hypothesis, experimentation is blind.

The microscope is the eye of the microbiologist.

The greatest reward for a researcher is to see his work applied for the good of humanity.

We must turn our weapons against the invaders within.

Patience and tenacity are worth more than twice the intelligence.

The chemical constitution of a substance determines its biological action.

In science, the credit goes to the man who convinces the world, not to the man to whom the idea first occurs.