Science knows no country, because knowledge belongs to humanity, and is the torch which illuminates the world. Science is the highest personification of the nation because that nation will remain the first which carries the furthest the works of thought and intelligence.

Did you ever observe to whom the accidents happen? Chance favors only the prepared mind.

Wine is the healthiest and most health-giving of drinks.

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

When you believe you have found an important scientific fact, and are feverishly curious to publish it, constrain yourself for days, weeks, years sometimes, fight yourself, try and ruin your own experiments, and only proclaim your discovery after having exhausted all contrary hypotheses. But when, after so many efforts you have at last arrived at a certainty, your joy is one of the greatest which can be felt by a human soul.

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

Chance favours a prepared mind.