"The man who promises everything is sure to fulfil nothing, and everyone who promises too much is in danger of using evil means in order to carry out his promises, and is already on the road to perdition"

This quote by Carl Jung is a warning against making promises that are too grand or impractical. He suggests that those that make such guarantees are most likely to fail in satisfying them, as well as may even turn to underhanded or immoral methods in order to do so. This could result in a disaster area as well as spoil, as the person is incapable to keep their guarantees. The quote is a reminder to be realistic and also sincere when making pledges, and to just make assurances that can be maintained. It is additionally a caution versus making guarantees that are also excellent to be real, as this might result in a domino effect of underhanded habits. Ultimately, the quote is a tip to be mindful of the guarantees we make, and to only make guarantees that we can keep.