No woman can keep up with things who never talks with any one but young children.
 Theodore Roosevelt, Theodore Roosevelt; an Autobiography (1913). copy citation

Context

“But I've been out of touch with people too long now, and my husband would much rather go and talk to some woman who hasn't had any children, because she knows things (I am not specifying any particular woman) . I simply bore him to death because I'm not interesting. Now, tell me, how was it my fault? I was only doing what I thought was my duty. No woman can keep up with things who never talks with any one but young children. As soon as my children grew up they took the same attitude as their father, and frequently say, "Oh, mother doesn't know." They look up to and admire their father because he's a man of the world and knows how to act when he goes out.” source