Guru
Guru is heavy, because he carries Lord Krishna in his heart.
Affection
To give and take affection is a natural craving for every living entity.
Character
A person’s accomplishments induce respect and adoration from another person’s mind, but it doesn’t go beyond that. However a person’s character induces respect and love from other people’s hearts.
Character in People
All paths are valid if they actually bring about good character in people.