Autodidacticism (also autodidactism) or self-education (also self-learning and self-teaching) is education without the guidance of masters (such as teachers and professors) or institutions (such as schools).
Generally, an autodidact is an individual who chooses the subject they will study, their studying material, and the studying rhythm and time. An autodidact may or may not have formal education, and their study may be either a compliment or an alternative to formal education. Many notable contributions have been made by autodidacts.
The term has its roots in the Ancient Greek words αὐτός (autós, lit. 'self') and διδακτικός (didaktikos, lit. 'teaching'). The related term didacticism defines an artistic philosophy of education.