The poet, William Blake, revealed his anger to his friend and the anger ended. But when the poet concealed his anger from his enemy, the anger grew. It grew like a tree that bore a bright apple. His enemy saw the shining apple. Even though he knew that the apple belonged to the poet, he wanted to have it. So the enemy came secretly into the garden when it was night and ate the apple. In the morning, the ‘ poet’s anger changed into gladness when he found the enemy outstretched under the poison tree. The apple in the tree of anger symbolizes the poisonous effect.