Professor Severus Snape was a very important character through out the Harry Potter series. He played very important roles in Harry's life as well as in Hogwarts fortune. His works were admirable and beyond expression in words.
But, with all due respect to him, I could not understand why he portrayed himself as angry, ferocious, tough and mischievous to his students?
He always misbehaved with harry and the students and nobody seemed to liked him, except his Slytherin students.
Why did he pretend to be so?
Was it because he could not get Lily and that Harry was the son of James, the hater of Snape?