shouldst thou stay till next week, I will come and escort thee home.
Why shouldst thou lay on me the name of coward, who am yet but a child?
But shouldst thou ever go to the Regent's Court, and smoke with the others a pipe under the tree, think of me.
Phyllis, how shouldst thou like to go forth to serve a lady?
shouldst not thou then have had compassion also on thy fellow servant, even as I had compassion on thee?
shouldst thou fail, it will be a whacking with staves for thine.
"shouldst rather smile at their ignorance, and put it to profit," said he.
Thou, having a noble soul and a good one, shouldst be happy.
"Be it as thou pleasest," said the Demon, "I will not that thou shouldst break thy vow;" and he laughed aloud.
Ah, shouldst see me fill my mouth with smoke, and blow it out in rings!
Old English sceal, Northumbrian scule "I owe/he owes, will have to, ought to, must" (infinitive sculan, past tense sceolde), a common Germanic preterite-present verb (along with can, may, will), from Proto-Germanic *skal- (cf. Old Saxon sculan, Old Frisian skil, Old Norse and Swedish skola, Middle Dutch sullen, Old High German solan, German sollen, Gothic skulan "to owe, be under obligation;" related via past tense form to Old English scyld "guilt," German Schuld "guilt, debt;" also Old Norse Skuld, name of one of the Norns), from PIE root *skel- (2) "to be under an obligation."
Ground sense of the Germanic word probably is "I owe," hence "I ought." The sense shifted in Middle English from a notion of "obligation" to include "futurity." Its past tense form has become should (q.v.). Cognates outside Germanic are Lithuanian skeleti "to be guilty," skilti "to get into debt;" Old Prussian skallisnan "duty," skellants "guilty."