What advice did Black Beauty's Mother give him at the beginning of the book?

At the beginning of "Black Beauty," his mother advises him to always be good, gentle, and kind, emphasizing the importance of treating others with respect and compassion. She highlights the value of being well-mannered and understanding, as these traits will earn him a good reputation and caring treatment from humans. Her teachings serve as foundational lessons for Black Beauty as he navigates the challenges of life.