Proverbs 27:1-4

Boast not thyself of to morrow; For thou knowest not what a day may bring forth. Let another man praise thee, and not thine own mouth; A stranger, and not thine own lips. A stone is heavy, and the sand weighty; But a fool's wrath is heavier than them both. Wrath is cruel, and anger is outrageous; But who is able to stand before envy?