The preliminary practices have always been the foundation of all practices. Often when hearing the word “foundation,” people tend to think that it means not very advanced and thus not especially important. That is a misunderstanding. As the saying goes, “What can the hair adhere to without the skin?” With respect to the Dharma, the so-called foundational practice is really the root of all practices and hence the most profound.
~ Depicted from Luminous Wisdom Book Series 1