This quote from Buddha is a reminder that no matter how much guidance and support a teacher provides, ultimately it is up to the student to take ownership of their own learning. A good teacher will provide the resources and tools necessary for success, but it is up to the student to take the initiative to put in the effort and make the most of the opportunity. A teacher can open the door to knowledge, but it is the student who must walk through it and take the journey to gain the knowledge and skills necessary for success.
