From a study of the discourses of the Buddha preserved in the Pali Canon, it will be seen that the idea of a personal deity, a creator god conceived … - Nyanaponika Thera

It will become an immediate certainty to the meditator that mind is nothing beyond its cognizing function. Nowhere, behind or within the function, can any individual agent or abiding entity be detected. By way of one’s own direct experience, one will this have arrived at the great truth of No-soul or Impersonality (anatta; Sanskrit anatma), showing that all existence is void of an abiding personality (self, soul, over-self, etc.) or an abiding substance of any description.

A look into long-neglected quarters of the mind will come as a wholesome shock to the observer. It will convince him of the urgent need for methodical mental culture.

Buddha advised his son Rahula: "Make disgust strong in you." ... When the disciple sees the constituents of body and mind as impermanent, suffering and not self, he becomes disgusted with them; through his disgust he becomes dispassionate, and through dispassion he is liberated.