As a writer, Seneca is known for his philosophical works, and for his plays, which are all tragedies. His prose works include a dozen essays and one hundred twenty-four letters dealing with moral issues. 
Seneca's influence on later generations is immense—during the Renaissance he was "a sage admired and venerated as an oracle of moral, even of Christian edification; a master of literary style and a model for dramatic art."

THE TRAGEDIES
THE MADNESS OF HERCULES
THE TROJAN WOMEN
THE PHOENICIAN WOMEN
PHAEDRA
THYESTES
HERCULES ON OETA
AGAMEMNON
OEDIPUS
MEDEA
OCTAVIA

THE EPISTLES
TO MARCIA, ON CONSOLATION
TO MY MOTHER HELVIA, ON CONSOLATION
TO POLYBIUS, ON CONSOLATION
THE MORAL EPISTLES

THE ESSAYS
ON ANGER
ON THE SHORTNESS OF LIFE
THE PUMPKINIFICATION OF THE DIVINE CLAUDIUS
ON THE FIRMNESS OF THE WISE PERSON
ON CLEMENCY
ON THE HAPPY LIFE
ON LEISURE
NATURAL QUESTIONS
ON BENEFITS
ON TRANQUILLITY OF MIND
ON PROVIDENCE