"It only takes 20 years for a liberal to become a conservative without changing a single idea"

This quote by Robert Anton Wilson suggests that the passage of time can have a significant impact on one's political views. It indicates that a person's views can alter with time, even if their core beliefs remain the same. This could be due to the impact of external elements such as the media, or simply the truth that individuals's opinions can develop in time. It also suggests that the political spectrum is not as rigid as it may appear, and that people can move in between different ideologies without necessarily changing their core beliefs. Ultimately, this quote recommends that political views are not fixed, which they can change with time, even if the underlying beliefs stay the exact same.