He was born in Arta, Greece, and moved to Athens in 1927. In 1936 he graduated from the Athens School of Fine Arts and left to live in Rome, after having received a scholarship, and then in Paris. In 1957, he was elected professor of painting at the Athens School of Fine Arts and two years later had his first solo exhibition in Athens. Moralis had also been involved in ceramics, illustration and set design. He had numerous distinctions some of which are the Medal of the Order of the Phoenix (1965), the gold medal at the International Exhibition in Munich (1973) and the Prize of Arts and Letters of the Athens Academy (1979). He participated in numerous exhibitions both nationally and internationally, such as the Venice Biennale. In 1988, the National Gallery of Greece honored him with a retrospective exhibition and with the Medal of the Commander of the Order of Honor.
Moralis’ work had a large impact on the post-war art era in Greece, achieving the unity of the classic and the modern. His universe was consisted of pure simplicity not diverging from Eros and Thanatos as his human-centered theme, both in the realistic and geometric period of his work.