The meaning of life is a philosophical question concerning the significance of life or existence in general. It can also be expressed in different forms, such as "Why are we here?", "What is life all about?", and "What is the purpose of existence?" It has been the subject of much philosophical, scientific, and theological speculation throughout history. There have been a large number of proposed answers to these questions from many different cultural and ideological backgrounds.

The meaning of life is in the philosophical and religious conceptions of existence, social ties, consciousness, and happiness, and borders on many other issues, such as symbolic meaning, ontology, value, purpose, ethics, good and evil, free will, the existence of one or multiple Gods, conceptions of God, the soul, and the afterlife. Scientific contributions focus primarily on describing related empirical facts about the universe, exploring the context and parameters concerning the 'how' of life. Science also studies and can provide recommendations for the pursuit of well-being and a related conception of morality. An alternative, humanistic approach poses the question "What is the meaning of my life?" The value of the question pertaining to the purpose of life may coincide with the achievement of ultimate reality, or a feeling of oneness, or even a feeling of sacredness.Platonism
Main article: Platonism
Plato was one of the earliest, most influential philosophers—mostly for idealism—a belief in the existence of universals. In the Theory of Forms, universals do not physically exist, like objects, but as heavenly forms. In The Republic, the Socrates character's dialogue describes the Form of the Good.

In Platonism, the meaning of life is in attaining the highest form of knowledge, which is the Idea (Form) of the Good, from which all good and just things derive utility and value.

Aristotelianism
Main article: Aristotelian ethics
Aristotle, an apprentice of Plato, was another early and influential philosopher, who argued that ethical knowledge is not certain knowledge (such as metaphysics and epistemology), but is general knowledge. Because it is not a theoretical discipline, a person had to study and practice in order to become "good"; thus if the person were to become virtuous, he could not simply study what virtue is, he had to be virtuous, via virtuous activities. To do this, Aristotle established what is virtuous:

Every skill and every inquiry, and similarly, every action and choice of action, is thought to have some good as its object. This is why the good has rightly been defined as the object of all endeavor [...]
Everything is done with a goal, and that goal is "good".
—Nicomachean Ethics 1.1
Yet, if action A is done towards achieving goal B, then goal B also would have a goal, goal C, and goal C also would have a goal, and so would continue this pattern, until something stopped its infinite regression. Aristotle's solution is the Highest Good, which is desirable for its own sake. It is its own goal. The Highest Good is not desirable for the sake of achieving some other good, and all other "goods"