"Never open the door to a lesser evil, for other and greater ones invariably slink in after it"

The quote by Baltasar Gracian recommends against compromise and choosing lower evils. It suggests that once you allow an unfavorable force or person to enter your life, it can bring in even worse ones. This concept applies to all elements of life, whether it's a personal relationship or an organization offer. In essence, the quote warns versus short-term thinking and advises individuals to think about the long term ramifications of their decisions. It encourages them to believe thoroughly prior to opening the door to anybody or anything, as it may bring in more negative effects than they initially expected.