Q: Love and hate existed ever since the world began. Hence are they not both eternal?
A: No. Hate is not eternal. It has an end when love develops to the fullest extent. Hate is an evil vritti. It is an enemy of peace.
Q: What brings forth hate?
Q: How can I check the wave of anger in the mind?
A: If you develop cosmic love or universal love, hatred will vanish. Positive always overcomes the negative. Try to behold the Self in all. How can you hate the Self, the one common consciousness? Hatred is the effect of ignorance.
Develop Kshama (forgiveness), patience, Atma Bhava; anger will vanish. Practice of Japa and devotion will eradicate it. Try to nip it in the bud, when it is in the form of a slight ripple. Do not allow it to assume the form of a big wave. Enquire “who am I?” There is no anger in Atman. Anger is a negative mental modification. When you try to see your beloved Lord in all these names and forms anger will fly away with all it’s train of vicious qualities.