The BrainBashers Dictionary of Proverbs is running out of memory. Below are four well known proverbs with their vowels missing and the remaining letters are grouped in fours.
dntb tthh ndth tfds y
bslw nchs ngbt slwr nchn gng
thnk frst ndth nspk
Hint: The first words of the proverbs are Do, Truth, Be, Think.