Note 15 — Chapter VII · THE FOUNDATIONS OF PHYSICS.
Reading edition
‘non puto te dubitaturum, an adfectus corpora sint, tanquam ira, amor, tristitia. si dubitas, vide an voltum nobis mutent, an frontem adstringant, an faciem diffundant, an ruborem evocent, an fugent sanguinem. quid ergo? tam manifestas notas corpori credis imprimi nisi a corpore?’ ib. 106, 5.