In a legal procedure sense, lineal descent refers to the acquisition of estate by inheritance from grandparent to parent and parent to child, whereas collateral descent refers to the acquisition of estate or real property by inheritance from sibling to sibling, and cousin to cousin.
Early life. Plato was born in Athens, Greece, the son of Ariston and Perictione, both of Athenian noble backgrounds. He lived his whole life in Athens, although he traveled to Sicily and southern Italy on several occasions.One story says he traveled to Egypt.arly life. Plato was born in Athens, Greece, the son of Ariston and Perictione, both of Athenian noble backgrounds. He lived his whole life in Athens, although he traveled to Sicily and southern Italy on several occasions. One story says he traveled to Egypt.
Around 387, the 40-year-old Plato returned to Athens and founded his philosophical school in the grove of the Greek hero Academus, just outside the city walls. In his open-air Academy he delivered lectures to students gathered from throughout the Greek world (nine-tenths of them from outside Athens).