Thomas Hobbes (1588-1679), born on April 5th, created the Social Contract theory, which aims to explain how governments derive their power from the will of the citizens. Hobbes thought that a monarchy is the best form of government and that the king (or queen) should be able to do whatever they want without the citizens having the right to oppose them. (more...)

On March 28, 585 BC, Thales of Miletus was supposed to have observed an eclipse of the Sun. But what date was it for him? A short history of the difficulty of knowing the date. (more...)