Quieting Doubts, Always Reflecting
349. If a man is tossed about by doubts, full of strong passions, and yearning only for what is delightful, his thirst will grow more and more, and he will indeed make his fetters strong.
350. If a man delights in quieting doubts, and, always reflecting, dwells on what is not delightful (the impurity of the body, &c.), he certainly will remove, nay, he will cut the fetter of Mâra.
Sacred Books of the East, Vol. 10: The Dhammapada and Sutta Nipata,
by Max Müller and Max Fausböll, [1881], at:
http://www.sacred-texts.com/bud/sbe10/sbe1026.htm