The establishment of Buddhism predates the field of psychology by over two millennia; thus, any assessment of Buddhism in terms of psychology is necessarily a modern invention. One of the first such assessments occurred when British Indologists started translating Theravada Buddhism's Abhidhamma from Pali and Sanskrit texts. Long-term efforts to juxtapose abhidhammic psychology with Western empirical sciences have been carried out by such Vajrayana leaders as Chogyam Trungpa Rinpoche and the 14th Dalai Lama.