An erroneous Shakespeare quote

Dear Editor,

The contributor to your letter column 9th instant in his letter entitled `The teacher/student relationship should be platonic’ said in part “Is it as Shakespeare put `Nature takes thou what course thou silt’”?
Please permit me to correct a small but erroneous quote. In Act (iii) Scene (ii) of Shakespeare’s Julius Caesar, Anthony in apparent soliloquy says “Now let it work. Mischief, thou are afoot, take thou what course thou wilt”.

And again in Act (iv) Scene (i), Octavius to Anthony “And some that smile (but) have in their hearts, I fear, millions of mischiefs”.

Yours faithfully,
Albert Lewis