 Avempace composed nine medical treatises (Forcada 2011: 113–114). Forcada has edited, studied, and translated one of them, his “Commentary on Aphorisms”, a supercommentary on Galen’s commentary on Hippocrates’ Aphorisms which illustrates Avempace’s view about medicine. Medical syllogisms have their premises specifically obtained by means of experience. Experience is obtained on its turn by means of perception through one’s life time. Avempace defines tajriba, experience, as an intentional human activity: