In this lesson Rimpoche discusses doubt, one of the root delusions that causes us trouble. Doubting the four Noble Truths, doubting Buddha, dharma and sangha, and doubting karma are what this root delusion is about. Doubt is a major obstacle for practitioners because it blocks our opportunity to develop spiritually. But, Rimpoche emphasizes, the antidote to the extreme of constantly doubting is not the opposite extreme of blind faith—something, which the Buddha himself warned against. Rimpoche recommends “intelligent faith” instead of “blind faith.” When we engage in Buddhist practice in order to overcome our delusions, it automatically builds up our positive nature. But if we continuously doubt the core teachings of the Buddha, we undermine our practice, and we will not make any progress towards reducing our delusions.