Gandhi and his associates continued to consult Ambedkar, keeping him influential. Ambedkar worked with other Congress leaders through the 1940s and wrote large parts of India's constitution in the late 1940s, but did indeed convert to Buddhism in 1956.[40] According to Jaffrelot, Gandhi's views evolved between the 1920s and 1940s; by 1946, he actively encouraged intermarriage between castes. His approach, too, to untouchability differed from Ambedkar's, championing fusion, choice, and free intermixing, while Ambedkar envisioned each segment of society maintaining its group identity, and each group then separately advancing the "politics of equality".[2]