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Moses Maimonides states that the purpose of circumcision is to weaken the male organ, without preventing the functions necessary to reproduction, but reducing pleasure and desire. Sages at the time had recognized that the foreskin heightened sexual pleasure. Maimonides reasoned that the bleeding and loss of protective covering rendered the penis weakened and in so doing had the effect of reducing a man's lustful thoughts and making sex less pleasurable. He also warned that it is "hard for a woman with whom an [[uncircumcised ]] man has had sexual intercourse to separate from him."

|Text=As regards circumcision, I think that one of its objects is to limit sexual intercourse, and to weaken the organ of generation as far as possible, and thus cause man to be moderate. Some people believe that circumcision is to remove a defect in man's formation; but every one can easily reply: How can products of nature be deficient so as to require external completion, especially as the use of the fore-skin to that organ is evident. This commandment has not been enjoined as a complement to a deficient physical creation, but as a means for perfecting man's moral shortcomings. <b>The bodily injury caused to that organ is exactly that which is desired; it does not interrupt any vital function, nor does it destroy the power of generation</b>. Circumcision simply counteracts excessive lust; for <b>there is no doubt that circumcision weakens the power of sexual excitement, and sometimes lessens the natural enjoyment</b>: the organ necessarily becomes weak when it loses blood and is deprived of its covering from the beginning. Our Sages (Beresh. Rabba, c. 80) say distinctly: It is hard for a woman, with whom an [[uncircumcised ]] had sexual intercourse, to separate from him. This is, as I believe, the best reason for the commandment concerning circumcision.