यस्माद्यावत्प्रियं स्यादिह हि विषयतस्तावदस्मिन्प्रियत्वंयावद्दुःखं च यस्माद्भवति खलु ततस्तावदेवाप्रियत्वम् ।नैकस्मिन्सर्वकालेऽस्त्युभयमपि कदाप्यप्रियोऽपि प्रियः स्या -त्प्रेयानप्यप्रियो वा सततमपि ततः प्रेय आत्माख्यवस्तु ॥ १० ॥
In plain words
Our affection for an object lasts in proportion to the pleasure it gives, and our aversion grows with the pain it brings. No one thing stays only pleasing or painful through time: a person once disliked can become dear, and someone beloved can become unwelcome. Ātma—the reality called the Self—alone remains always and supremely dear.
Close to the Sanskrit
From whatever sense object pleasure arises here, that object is dear to that degree; and from whatever sorrow arises, that same thing is displeasing to that degree. Neither condition remains in one thing at all times: even one who is disliked may become dear, and one who is dear may become disliked. Therefore the reality called Ātma is always the dearest.