Nature

Nature is the only thing I should remember. It is what guides the actions and life. All act towards nature.

That is the only thing I should memorize and absolutely be albe to memorize.

The nature of words is Ideas.
I should not memorize the lectures but ideas in those.

I must remember the nature. That is what makes a commerce student different from a law or medical student.
Calculation.
Focus on Nature, on ideas.