Rav Tanchum says נר חנוכה שהנחה למעלה מעשרים אמה פסולה דלא שלטה בה עינה Chanukah lights that he put above 20 amos is posel because he cannot see them, explains the father of the previous Matersdorfer Rav, that he is not diligent in his Torah learning thinking that the benefits come later from above after life, forgeting the other saying of Rav Tanchum הבור רק אין בו מים not only will he be lacking the knowledge of Torah but נחשאים ועקרבים יש בו but will have bad midos and charachter.