Пребывай с самим собой наедине, и тогда ты узнаешь, сколь ты беден духом. - Immanuel Kant

I have no knowledge of myself as I am, but merely as I appear to myself.

Now I say: man and generally any rational being exists as an end in himself, not merely as a means to be arbitrarily used by this or that will, but in all his actions, whether they concern himself or other rational beings, must always be regarded at the same time as an end.

The only quality necessary for being a citizen (i.e., a co-legislator), other than the natural one (that he is neither a child nor a woman), is that he be his own master, consequently that he have some property to support himself.