He was educated privately, partly on account of the delicacy of his health, and partly that he might act as amanuensis to his father, who had lost his sight.
Verses 15-17 are the indirect abstract of the speech's argument, but in verses 18-21 the apostle, carried away by the thought and barrier of the moment as he dictates to his amanuensis, forgets the original situation.
Its communication by Castelli to Galileo in 1641, with a proposal that Torricelli should reside with him, led to Torricelli repairing to Florence, where he met Galileo, and acted as his amanuensis during the three remaining months of his life.
For the latter are in fact only scribe's mistakes, the author being his own amanuensis.
In 1761 he became personally known to Pitt, who, recognizing his ability and discretion, once and again made use of his services as private amanuensis.