We do not find in Vedic literatures that they ever used contraceptive methods, although they were begetting hundreds of children. Checking population by contraceptive method is another sinful activity, but in this age of Kali people have become so sinful that they do not care for the resultant reactions of their sinful lives. King Puranjana lay down with his wife, Puranjani, and begot a large number of children, and there is no mention in these verses that he used contraceptive methods. According to the Vedic scriptures the contraceptive method should be restraint in sex life. It is not that one should indulge in unrestricted sex life and avoid children by using some method to check pregnancy. If a man is in good consciousness, he consults with his religious wife, and as a result of this consultation, with intelligence, one advances in his ability to estimate the value of life. In other words, if one is fortunate enough to have a good, conscientious wife, he can decide by mutual consultation that human life is meant for advancing in Krsna consciousness and not for begetting a large number of children. Children are called parinama, or by-products, and when one consults his good intelligence he can see that his by-products should be the expansion of his Krsna consciousness.