Galen of Pergamon (c. 129 - 216 AD) is well known in the history of medicine. His extensive writings and theories prevail for over 2000...

Atomic theory first appears in the 5th century BCE. Later examination notes the atom is much like an egg. Atoms have an extremely small,...

In ancient philosophical thought, Democritus is a visionary whose ideas continue to illuminate minds. Born in 460 BCE in Abdera, Greece,...

The ancient Greek philosopher Empedocles of Sicily is an important figure in science and metaphysics. Based on Plato's work he...

The ancient Greeks are celebrated for their contributions to various fields such as philosophy, mathematics, and medicine. Among their...

Caput mortuum (Latin "dead head") is a purple hematite iron oxide pigment, used in oil paints and dyes. Due to cultural significance of...

Caput mortuum, Latin for as "dead head" is an ominous name for a valued color. As an iron oxide it's easy to make at home. As a purple...

Olympiodorus of Thebes (c. 380 - 425 AD) is a multifaceted figure. A Roman historian from Egypt, poet, philosopher, and diplomat, he...

As humanity evolves, so does study of astrology. Settlement, and the advent of writing c. 3200 BCE, lead to concise development of...

The zodiac, a celestial coordinate system divided into twelve signs, has a rich history dating back to the Roman era, where it's heavily...

Astrology and astronomy give insights into seasonal changes and human nature. In Western tradition, astronomy is based on observance of...

In the ancient Greek view, creation of astrology is attributed to the legendary sage Hermes Trismegistus. In Hellenic Greek times (323...

The concept of a human soul, as well as a world soul or Anima Mundi, is found in many cultures. In Greek philosophy ancient thinkers...

Aristotle (c. 350 BCE) develops the Platonic concept of souls present in living beings, categorizing them based on distinct functions....

The theory of the four humors dominates medicine for two thousand years. Since the time of the ancient Greeks to the 19th century, humor...

Hair loss and baldness ( alopecia ) is a fear in ancient times, if hair is a sign of status, youth or virility. First century AD Greek...

Nous is a concept from classical philosophy, equated to intellect or intelligence, and the area of the human mind necessary for...

Olympiodorus the Younger, a prominent figure in late antiquity, is known as the last of the Neoplatonist pagans in Alexandria, Egypt. On...

"Lead is the ancestor of all metals. For gold is not a metal, gold is light. Lead requires only four periods of two hundred years each,...

Hermeticism and alchemy fall in love in ancient Alexandria , Egypt. Their relationship begins almost 2000 years ago and still prevails...