Laughter, while it lasts, slackens and unbraces the mind, weakens the faculties, and causes a kind of remissness and dissolution in all the powers of the soul. - Joseph Addison
Self-importance is our greatest enemy. Think about it - what weakens us is feeling offended by the deeds and misdeeds of our fellowmen. Our self-importance requires that we spend most of our lives offended by someone. - Carlos Castaneda
Public strengthens politics but politics weakens public. - Amit Kalantri
The reason for the unreason with which you treat my reason , so weakens my reason that with reason I complain of your beauty. - Miguel de Cervantes Saavedra