It is often considered weak-minded not to have an opinion – but, from the perspective of practising emptiness, it might be considered weak-minded to be unable to resist forming an opinion. If the urge to establish an opinion can be resisted, the emptiness of simply not knowing can be formlessly investigated. There are many occasions in life where it might be valuable to recognise that there is insufficient information upon which an opinion could be based. This could be termed ‘the emptiness of open-mindedness’ or ‘the emptiness of having a certain level of information – but being able to resist compulsively establishing concrete conclusions’.p52, Entering the Heart of the Sun and Moon Ngakpa Chögyam and Khandro Déchen, Aro Books, 2009, ISBN 978-0-9653948-3-3