Now you are in ripe old age, so you can accept vanaprastha life which is your duty as you are born in a brahmana family. According to our Vedic principle a brahmana is supposed to accept the four asramas, namely brahmacari, grhastha, vanaprastha, and sannyasa. Others are not do not accept sannyasa, but a person who is a brahmana must accept sannyasa at the end of his life.
Letter to Dinanatha N. Mishra, 26 July, 1975