I'm assuming you want examples: A stitch in time saves nine (fixing something early will save you effort later) He who hesitates is lost (one should act quickly) A penny saved is a penny earned. A fool and his money are soon parted. (An unwise man will spend his money foolishly and too fast)

An ounce of prevention is worth a pound of cure. 600 more at http://www.phrases.org.uk/meanings/proverbs.html