“there's no harm in hoping for the best as long as you're prepared for the worst.”
“Hope for the best; prepare for the worst.”
“hope for the best, prepare for the worst”
“I prepare for the worst, but hope for the best.”
“Hoping for the best, prepared for the worst, and unsurprised by anything in between.”
“Hope for the best, plan for the worst, but also try to be prepared for the unexpected.”