He is also a member of the Brazilian Academy of Philosophy.

Between 1937 and 1945, his candidacy for the Brazilian Academy of Letters was rejected six times.

In the same year, he was candidate for the second time to the Brazilian Academy of Letters.

He was president of the Brazilian Academy of Sciences from 1943 to 1945.

Who would succeed him as an "immortal" in the Brazilian Academy of Letters?

On April 6, 1961, he was elected to the Brazilian Academy of Letters.

He is the current president of Brazilian Academy of Sciences since 2007.

He is a member of the Brazilian Academy of Sciences since 2004.

Santos belongs to the Brazilian Academy of Letters since 2006.

He was a member of the Brazilian Academy of Letters.