In the crypt are interred the remains of Voltaire and Rousseau , Hugo and Zola , assassinated Socialist leader Jean Jaurys , and Louis Braille , the inventor of the alphabet for the blind .
Memorials to remains of Voltaire and Rousseau , Hugo and Zola , assassinated Socialist leader Jean Jaurys , and Louis Braille are all found in the crypt , however their remains are interred elsewhere .