"De Brevitate Vitae", more commonly known as "Gaudeamus igitur" or just "Gaudeamus", is a popular academic commercium song in many European countries, mainly sung or performed at university graduation ceremonies. Despite its use as a formal graduation hymn, it is a jocular, light-hearted composition that pokes fun at university life. The song is thought to originate in a Latin manuscript from 1287. It is in the tradition of carpe diem with its exhortations to enjoy life. It was known as a beer-drinking song in many early universities and is the official song of many schools, colleges, universities, institutions, student societies and is the official anthem of the International University Sports Federation.

Carpe diem is a Latin aphorism, usually translated "seize the day", taken from book 1 of the Roman poet Horace's work Odes.