In plain words
The good and the bad we experience in this world are nothing but the feelings within us; they are not something apart. So we must set our feelings right. If humanness is to blossom in us, we must drive bad qualities far away.
Your own mind is your friend, your own mind is your enemy
If hatred arises in you towards anyone, think, ‘Cha, this is an insult to my very humanness’, and check the hatred. Recognise that attachment too goes against humanness. What you should be attached to is God alone, not persons. You love your son. That is because you look on your son as your own image. In the same way, think, ‘All forms are mine.’ He who loves you, he who reviles you and he who mocks you are in truth one and the same. At one time he may be angry, at another he may love. Nursing such passing delusions, you are sinking in Māyā. There is no one who hates you. There is no one who is your friend. Love and hatred alike arise from you yourself. Your own mind is your enemy. Your own mind is your friend. Every single thing has arisen from within us; none of it was given by God.
You yourself are Brahmā, you yourself are Viṣṇu, you yourself are Śiva
Wherever you look, what you see is only the five elements; there is no sixth element anywhere.