Artistic geniuses tend to be extrovert and outspoken, leaving behind a catalogue of inspiring and controversial comments.
Only the likes of Michelangelo and Da Vinci, whose careers have been examined in such detail, will have any great material sourced upon them.
"Messy Tom" as Masaccio was referred to by biographer Giorgio Vasari was not a quiet individual but simply the time that has passed since have left little information available.
The one quotation accepted as having come from Tommaso di Ser Giovanni di Simone is:
I was once that which you are, and what I am you will also be.