Sifu Waller is a teacher of unquestionable knowledge and experience. His classes and workshops are friendly, safe, inclusive and fun. The syllabus that he has created is structured, balanced and inter-connected. His teaching is clear, in-depth and incredibly practical. The exercises and the form do not consist of meaningless or empty movements - everything is done and practiced for a very practical reason (or, usually, multiple possible reasons). The more I learn, the more I'm amazed at both the depth and simplicity of what we're being taught, and also Sifu Waller's depth of knowledge and understanding - there seems to be no end to it.