A friend should bear his friend's infirmities. [ Shakspeare ]

Others proclaim the infirmities of a great man with satisfaction and complacence, if they discover none of the like in themselves. [ Addison ]

Our admiration of a famous man lessens upon our nearer acquaintance with him; and we seldom hear of a celebrated person without a catalogue of some notorious weaknesses and infirmities. [ Addison ]

Gluttony is the source of all our infirmities, and the fountain of all our diseases. As a lamp is choked by a superabundance of oil, a fire extinguished by excess of fuel, so is the natural health of the body destroyed by intemperate diet. [ Burton ]

The golden hour of invention must terminate like other hours; and when the man of genius returns to the cares, the duties, the vexations, and the amusements of life, his companions behold him as one of themselves, - the creature of habits and infirmities. [ Isaac Disraeli ]

Grief! thou art classed amongst the depressing passions. And true it is that thou humblest to the dust, but also thou exaltest to the clouds. Thou shakest us with ague, but also thou steadiest like frost. Thou sickenest the heart, but also thou healest its infirmities. [ De Quincey ]

So long as thou art ignorant, be not ashamed to learn : he that is so fondly modest, not to acknowledge his own defects of knowledge, shall in time, be so foully impudent to justify his own ignorance; ignorance is the greatest of all infirmities, and, justified, the chiefest of all follies. [ Quarks ]