The warm humour is influenced by the cold. and the cold by the warm. Goodness, Darkness and Ignorance are the attributes of the soul, and it is said by the learned, that their presence in equal parts, indicates health (of the mind). But if any of the three preponderate, some remedy is laid down.
उष्णेन बाध्यते शीतं शीतेनोष्णं च बाध्यते। सत्त्वं रजस्तमश्चेति त्रय आत्मगुणाः स्मृताः॥ तेषां गुणानां साम्यं चेत् तदाहुः स्वस्थलक्षणम्। तेषामन्यतमोत्सेके विधानमुपदिश्यते॥