"I have found little that is "good" about human beings on the whole. In my experience most of them are trash, no matter whether they publicly subscribe to this or that ethical doctrine or to none at all. That is something that you cannot say aloud, or perhaps even think"

Sigmund Freud's quote is a reflection of his downhearted view of human nature. He believes that most people are "garbage" despite their ethical beliefs or lack thereof. He thinks that this is something that can not be said aloud and even believed, likely due to the reality that it is a controversial viewpoint. Freud's quote suggests that he thinks that people are naturally flawed and that it is difficult to find anything "great" about them. He believes that people are not as moral as they might appear which their true nature is often hidden. Freud's quote is a tip that individuals must not be evaluated exclusively on their outward look or beliefs, as their true nature may be various. It also serves as a caution that people need to be careful of what they say and believe, as it might be seen as offending or questionable.