The common ground upon which all agree may be stated thus: All males having certain qualifications are in reason and in law entitled to vote. These qualifications affect either the body or the mind or both. The first is the attainment of a certain age. The age in itself is not material, but maturity of mental development is material, although soundness of body in itself is not essential, and want of it never works forfeiture of the right. Age as a qualification for suffrage is by no means to be confounded with age as a qualification for service in war. Society has well established the distinction, and also that one has no relation whatever to the other--the one having reference to physical prowess, while the other relates only to the mental state. This is shown by the ages fixed by law, that of eighteen years as the commencement of the term of presumed fitness for military service and forty-five as the period of its termination; while the age of presumed fitness for the suffrage, which requires no physical superiority certainly, is set at twenty-one years when still greater strength of body has been attained than at the period when liability to the dangers and hardships of war begins. There are at least three million more male voters in our country than of the population liable by law to the performance of military duty. It is still further to be observed that the right of suffrage continues as long as the mind lasts, while ordinary liability to military service ceases at a period when the physical powers, though still strong, are beginning to wane. The truth is that there is no legal or natural connection between the liability to fight and the right to vote.