Giovanni Gualberto de Soria (April 10, 1707 – August 16, 1767) was an Italian philosopher who supported sensism, praising Galileo and critical of Cartesianism.
His father, likely of Spanish origin, had lived in Campo on the Island of Elba and moved to Pisa around 1698 to work in the postal service.
Around 1725 he returned to Livorno and joined a circle of Galilean experimentalists along with doctor Ictier, jurists G. A. Padroni and Guiseppe Athias, and Giacinto Cestoni.
He provided various views on rational thought including canons such as:[2]"Wherever there is a problem to be explained, whether it is of the first, second, or third kind; if it is certain that its solution belongs to the third source, and will, therefore, be derived from another person's evidence and another person's words, take diligent care that, by mistake, you do not misinterpret the thoughts of those whose evidence you consult through the words and expressions they use."
"De Soria spent his holidays in the Calci area where his mother was from and he died in Sant'Andrea a Lama and is buried in the church there.