Oh my goodness the mystery that has prompted my objective. My quality lies exclusively in my tirelessness.

Inspiration is the impact of a fact on a well-prepared mind

These microscopic organisms form an entire world composed of species, families and varieties whose history, which has barely begun to be written, is already fertile in prospects and findings of the highest importance. The names of these organisms are very numerous and will have to be defined and in part discarded. The word microbe which has the advantage of being shorter and carrying a more general meaning, and of having been approved by my illustrious friend, M. Littré, the most competent linguist in France, is one we will adopt.

These three things-work, will, success-fill human existences. Will opens the door to success, both brilliant and happy. Work passes these doors, and at the end of the journey success comes in to crown one's efforts.

Do not put forward anything that you cannot prove by experimentation.

In good philosophy, the word cause ought to be reserved to the single Divine impulse that has formed the universe.

Without theory, practice is but routine born of habit. Theory alone can bring forth and develop the spirit of inventions.