Sentence:  Methinks I should know you, and know this man; / Yet I am doubtful; for I am mainly ignorant / What place this is; and all the <WSD>skill</WSD> I have / Remembers not these garments; nor I know not / Where I did lodge last night. ... 
Meaning of the word marked with <WSD> tags:  Discrimination; judgment; propriety; reason; cause.