He who is of calm and happy nature will hardly feel the pressure of age, but to him who is of an opposite disposition youth and age are equally a burden.
There is no absurdity so palpable but that it may be firmly planted in the human head if you only begin to inculcate it before the age of five, by constantly repeating it with an air of great solemnit...
In Athens, Plato founded the Academy, a philosophical school where he taught the philosophical doctrines that would later become known as Platonism. Plato, or Platon, was a pen name derived, apparently, from the nickname given to him by his wrestling coach – allegedly a reference to his physical girth. According to Alexander Polyhistor, quoted by Diogenes Laërtius, his actual name was Aristocles, son of Ariston, of the deme (suburb) Collytus, in Athens.Plato was an innovator of the written dialogue and dialectic forms in philosophy. He raised problems for what became all the major areas of both theoretical philosophy and practical philosophy. His most famous contribution is the theory of forms (or ideas), which has been interpreted as advancing a solution to what is now known as the problem of universals. He is the namesake of Platonic love and the Platonic solids. His own most decisive philosophical influences are usually thought to have been, along with Socrates, the pre-Socratics Pythagoras, Heraclitus, and Parmenides, although few of his predecessors' works remain extant and much of what is known about these figures today derives from Plato himself.Along with his teacher, Socrates, and student Aristotle, Plato is a central figure in the history of philosophy. Unlike the work of nearly all of his contemporaries, Plato's entire body of work is believed to have survived intact for over 2,400 years. Although their popularity has fluctuated, Plato's works have consistently been read and studied. Through Neoplatonism Plato also greatly influenced both Christian (through e.g. Augustine of Hippo) and Islamic philosophy (through e.g. Al-Farabi). In modern times, Alfred North Whitehead famously said: "the safest general characterization of the European philosophical tradition is that it consists of a series of footnotes to Plato."