Hasalima ka'idar falsafa ce da ke jaddada mahimmancin gogewa da shaida da aka samu ta hanyar lura, gwaji, da tsinkaye a matsayin tushen ilimi na farko. A wasu kalmomi, yana da'awar cewa ilimi yana samuwa ne ta hanyar gwaninta na hankali, kuma wannan shaida ta zahiri ita ce kawai tushen abin dogaro na ilimi. Masana ilmin kimiya da fasaha sun ki amincewa da ra'ayin cewa ra'ayi na asali ko kuma ilimin priori ingantaccen tushen ilimi ne, kuma a maimakon haka sun yi imani cewa duk ilimi ya samo asali ne daga kwarewar hankali.
1. The minutes lingered, and the delay had seemed an hour to the adventurer in empiricism, when the Huron laid aside his pipe and drew his robe across his breast, as if about to lead the way to the lodge of the invalid.