Seneca: Digest it

“We should see to it that whatever we have absorbed should not be allowed to remain unchanged, or it will be no part of us. We must digest it: otherwise it will merely enter the memory and not the reasoning power [in memoriam non in ingenium]. Let us loyally welcome such foods and make them our own, so that something that is one may be formed out of many elements, just as one number is formed of several elements.”