You cannot be a saint if you don't repress the sinner. And when you repress the sinner, the sinner goes deeper into your being. So these saints are in constant conflict, a kind of civil war, fighting with themselves. You can see they don't have any zest for life: they don't have any energy for it, they don't have any cheerfulness. How can they be cheerful?
Their whole life is a miserable conflict with themselves. They cannot be at ease, they cannot relax, because they are afraid -- if they relax, the sinner is there and if they relax the sinner will raise its head. They have to constantly repress it.
Remember, if you repress something you have to repress it constantly -- day in, day out, year in, year out. And the problem is not solved by repressing. In fact it becomes more and more acute, chronic, because whatsoever is repressed becomes more and more powerful. It gathers energy, it becomes a tumor inside you.