Those men are good who study the good of others without regarding themselves. Those men are ordinary men who, while they benefit others, do not neglect their own interests. Those men are demons who destroy another's good for their own profit. What shall we call those who aimlessly destroy that which is another's?

[https://www.studocu.com/en-us/document/university-of-southern-california/seminar-in-humanistic-inquiry/the-abandoned-baobab-book-notes/2209003 Studocu]

In his study of the quadrature and duplication-problems, Hippocrates contributed much to the geometry of the circle.

I try to forget what happiness was,
and when that don't work, I study the stars.

The accomplishments of a teacher of ants
Are but accomplishments for earning a living.
But the study of the termination of earthly incarnation—
Why should that not be the accomplishment?

No art or learning is to be pursued halfheartedly," His Highness replied, "...and any art worth learning will certainly reward more or less generously the effort made to study it.

No matter how deep a study you make. What you really have to rely on is your own intuition and when it comes down to it, you really don't know what's going to happen until you do it.