有二法难可了知：谓自性清净心难可了知，彼心为烦恼所染亦难了知。如此二法，汝及成就大法菩萨摩诃萨乃能听受，诸余声闻唯信佛语。
《胜鬘师子吼一乘大方便方广经》
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There are two subjects that are difficult to comprehend:the mind that is inherently pure and the fact that this[same] mind has been contaminated by defilements.These two subjects can be heard and accepted by youand the Bodhisattvas-M
