William Harvey

The blood is not consumed in the lungs, but passes through them to the left ventricle of the heart.

The heart is a muscular organ, and its action is purely mechanical.

I have demonstrated the circulation of the blood, not by words, but by facts.

The blood is not a stagnant fluid, but a living stream, constantly moving and renewing itself.

The circulation of the blood is a truth which has been hidden from the ancients, but which has now been revealed by the light of experiment.

I have not sought to overturn the opinions of the ancients, but to correct their errors.

The blood is the primary seat of the soul, and the heart is its principal organ.

The circulation of the blood is a phenomenon which is common to all animals, and which is essential to their life.

I have not been afraid to depart from the beaten path, and to follow the guidance of nature.

The heart is the beginning of life, the sun of the microcosm, from which all vigour and strength are derived.

The blood is not a simple fluid, but a compound of many parts, each of which has its own peculiar function.

The circulation of the blood is a truth which is so evident, that it requires no further proof.

I have not been influenced by the desire of fame or profit, but by the love of truth.

The blood is the common bond which unites all the parts of the body, and by which they are nourished and sustained.

The circulation of the blood is a discovery which will immortalize my name, and which will be remembered as long as medicine is cultivated.

The heart is a machine, and its motions are governed by mechanical laws.

The blood is the source of all heat and vital spirits.

The circulation of the blood is a truth which has been confirmed by the testimony of all ages, and by the experience of all nations.

I have not been afraid to expose my opinions to the judgment of the learned, and to submit them to the test of experiment.

The blood is the life, and its motion is the essence of life.