Mind training (lojong) is indispensable for those who wish to become bodhisattvas. This mind training text summarises the main points of training in bodhicitta (the mind of awakening). Like a manual, the text provides a step by step guide for practitioners to follow in order to develop bodhicitta gradually. The text is concise, short on words but deep in meaning. Each verse teaches a different practice through which we can endeavor to make our hearts and minds vaster and more encompassing. The profound practice of tong-len is one of the practices taught in this text.