What idioms are there about teacher's love?

advisor

Be instructed that there is no fixed teacher.

advisor

Let those who know teach.

Blue comes from indigo plants, but it is bluer than the plants themselves ―― students are better than teachers.

The dignity of teachers' profession

Be good at doing business

A person's single correction teacher

Respect the teacher and fear his teachings.

Life-giving Spring Breeze and Rain —— The Beneficial Influence of Education

bleed

The candle burns out and glows.

Guide patiently and systematically

be tireless in teaching

There are students everywhere; There are students all over the country [the world].

There are a lot of students

Also known as Duke Zhou and Confucius or Confucius and Yan Yuan.

A good work needs someone to do his best.

Another student.

A good teacher makes a good apprentice.

Give one's last loyalty

be tireless in teaching

advisor

The dignity of teachers' profession

Discipline, discipline

Not known to the public

diligently

have both ability and (moral) integrity

Work hard

Life-giving Spring Breeze and Rain —— The Beneficial Influence of Education

It takes ten years for trees to grow tall and a hundred years for talents to mature ―― it takes a long time to cultivate people.

Be a talented person

Discipline, discipline

Tao Li bu Yan