In addition to his scientific work, Bohm was deeply interested in exploring the nature of consciousness, with particular attention to the role of thought as it relates to attention, motivation, and conflict in the individual and in society. Those concerns were a natural extension of his earlier interest in Marxist ideology and Hegelian philosophy. His views were brought into sharper focus through extensive interactions with the philosopher, speaker, and writer Jiddu Krishnamurti, beginning in 1961. Their collaboration lasted a quarter of a century, and their recorded dialogues were published in several volumes.