Alternative form of the darkest hour is just before the dawn

(idiomatic) Before one can perform a complicated task, one has to learn how to perform more simple tasks. / Used other than figuratively or idiomatically: see learn, walk, before, run.

One cannot expect success at the first attempt; practice makes perfect.

(orthography, mnemonic) In English words that contain the letters I and E together, the I tends to come before the E (ie), except in cases when the two are preceded by the letter C, in which case the E comes before the I (cei).

Alternative form of there is nothing new under the sun

Alternative letter-case form of I before E, except after C

One should not depend upon a favorable (and typically overoptimistic) outcome to one's plans until it is certain to occur.

(idiomatic) To break new ground.

present participle of boldly go where no man has gone before

Third-person singular simple present indicative form of boldly go where no man has gone before