Cleverness, after all, has its limitations. Its mechanical judgments and clever remarks tend to prove inaccurate with passing time, because it doesn't look very deeply into things to begin with
Every man has got to know his limitations.
I have always resisted putting limitations on myself, both professionally and personally.
My dad had limitations. That's what my good-hearted mom always told us. He had limitations, but he meant no harm. It was kind of her to say, but he did do harm.