Gliomas grow aggressively in brain tissue without clear boundaries, and brain tissue has its own functions. If functional preservation is not considered, the larger the resection, the better; if functional preservation is considered, the smaller the resection, the better. There is no uniform standard for glioma surgery (therefore, the guidelines recommend that glioma surgery be described as maximum safe resection, i.e., maximum resection with safety in mind). Sometimes a full excision is not necessarily a full score, but an extended excision is; sometimes not a full excision, but already a full score. Sometimes the degree of resection is related to the operator’s ability; sometimes it is not related to the operator’s ability, but to the operator’s philosophy and understanding of glioma. The core issue is the balance between the extent of resection and functional preservation. It is not easy to get things right when it comes to trade-offs and balance. Glioma surgery, being able to do it and being able to do it well are two different things. Don’t ever take surgery lightly.