I think you could choose either fire or ice.
fire = desire.
Selfishly wanting what you should not have is selfish desire. It is ruinous to think only of yourself. That's fire in this case.
hate is also very destructive. (I personally think that hate is the most dangerous of all possible character traits.) Hatred has emotional roots that cannot be easily overcome and certainly is not controlled by a tender heart. Intellect can be very guilty of hatred. That is why it is termed ice. Hatred can be quite cold governed by intellect.
In paragraphs, a stated main idea is called the topic sentence.
