There was a time when he, also, sincerely believed that intellectual complexity was necessary to achieve healing and growth. He relished being an expert and derived no small part of his identity and self-worth from that label. He does not anymore. This has taught him that the only true expertise that exists is expertise in self. The key insight here is simplicity.
Unconditional love is utterly simple.
Healing and growth based on unconditional love are also utterly simple. But when our individual beliefs and our collective perception are gummed up and made complex by the presence of judgment against self, we find it almost impossible to believe that simplicity really will be effective against issues and pain that have entirely eluded the best and the brightest of intellects. We have to keep proving this to ourselves over and over again. Dr. Sunan says not to confuse simple with easy. Unconditional love is simple.