Careful Words

perform (v.)

  All lovers swear more performance than they are able, and yet reserve an ability that they never perform; vowing more than the perfection of ten, and discharging less than the tenth part of one.

William Shakespeare (1564-1616): Troilus and Cressida. Act iii. Sc. 2.

Wise to resolve, and patient to perform.

Alexander Pope (1688-1744): The Odyssey of Homer. Book iv. Line 372.