A teacher must know that their 1 hour is equal to
the number of hours of number students in his or her
class. Therefore, they must not be lazy and irresponsible.

When you lost your memory,
the things you do is not keep searching back for your past,
But,
create new memory as you move on.

The most precious
legacy left behind is the
memory of them.

What we see
is always what is perpendicular to us.

And we,
cannot see what are parallel to us.