Upon any less condition than (the fact or thing stated in the sentence or clause which follows); if not; supposing that not; if it be not; were it not that; except; as, we shall fail unless we are industrious.
God will not permit any troubles to come upon us, unless He has a specific plan by which great blessing can come out of the difficulty. Peter Marshall
It is impossible to live without failing at something, unless you live so cautiously that you might as well not have lived at all, in which case you have failed by default. J. K. Rowling
Change does not roll in on the wheels of inevitability, but comes through continuous struggle. And so we must straighten our backs and work for our freedom. A man can't ride you unless your back is bent. Martin Luther King, Jr.
We learned about honesty and integrity - that the truth matters... that you don't take shortcuts or play by your own set of rules... and success doesn't count unless you earn it fair and square. Michelle Obama
Unless someone like you cares a whole awful lot, nothing is going to get better. It's not. Dr. Seuss