وثانيها: المنفعة، لتسهل عليه المشقة في تحصيله
The second heading is the benefit, so that the effort of mastering the science becomes easier to bear.
Recognizing benefits can sustain a student through challenging technical study. Logic is useful for organizing arguments across disciplines and detecting errors in reasoning.
Aim expresses what is intended; benefit describes practical advantage or value arising from study. They are related but not interchangeable in every discussion.