विद्य कालेन पच्यते
“vidya kālena pacyate”
We can digest different things at different rates. Fruits digest so quickly, for example – that you increase your risk of indigestion if you eat them with or just after other foods. Vegetables digest more quickly than grains, and so on. But what substance takes the longest time to digest?
vidya kālena pacyate
Knowledge / learning is the most difficult substance to “digest” (to really make full use of).