Split Infinitives : Non-Errors
For the hyper-critical, “to boldly go where no man has gone before” should be “to go boldly. . . .” It is good to be aware that inserting one or more words between “to” and a verb is not strictly speaking an error, and is often more expressive and graceful than moving the intervening words elsewhere; but so many people are offended by split infinitives that it is better to avoid them except when the alternatives sound strained and awkward.
See Our Another Section on Split Infinitives.