VERBS, AUXILIARY. May in doubtful statementsMay is used with various shades of the meaning of "permission," "possibility," &c.:
i.e. "if I am permitted by heaven to live long enough." It is a modest way of stating what ought to be well known, in
“He shall know you better, sir, if I may live to report you.
“If you may please to think I love the king.
i.e. "is possibly worth ten pounds." "May be" is often thus used almost adverbially for possibly. In
“A score of ewes may be worth ten pounds.
may means "can," "have time to."
“Season your admiration for awhile
Till I may deliver,
“May (can) it be possible?