William Harvey

I found the task so arduous, and the difficulties so great, that I almost despaired of success.

It is not possible that the blood can be supplied to the arteries in any other way than by the continuous transmission of the whole mass of the blood from the veins to the arteries.

I have been accustomed to show my dissections publicly, and to demonstrate to my auditors, as well as to my friends, the circulation of the blood.

The more accurately we search into the wonderful and mysterious works of nature, the more we shall find of the wisdom and omnipotence of the Creator.

Nature is nowhere accustomed to more open dealing than in the beginnings of things.

All things are generated from an egg.

It is by the study of the particular that we arrive at the knowledge of the universal.

The motion of the blood is in a circle, and is in a perpetual motion.

The heart is a pump, and its office is to propel the blood.

I have often been surprised, and indeed have sometimes laughed, at the arguments of those who, without having seen or examined anything for themselves, have immediately begun to argue against my new views on the circulation of the blood.

The blood is the very life itself.

Truth is the daughter of time, not of authority.

The heart is the first part that lives, and the last that dies.

Nature is a great teacher, and her lessons are always true.

I appeal to the eye, not to the mind.

The blood is the vehicle of life.

The heart is the primum mobile of the body.

The circulation of the blood is a divine mystery.

The heart is the source of all vital heat.

The heart is the sun of the microcosm.