This quote refers to the historical trajectory of Germany, a country that experienced both extreme abundance and severe scarcity. The “poisoning” through plenty could refer to the period of the late 19th and early 20th century when Germany was an industrial powerhouse and a leading global economy. This wealth and power led to a sense of nationalistic pride, which was one of the factors contributing to the start of World War I.

The “poisoning” through want, on the other hand, could refer to the period following World War I and especially after World War II, when Germany was left devastated, its economy in shambles, and its people in extreme poverty. This period of want and desperation created fertile ground for the rise of extremist ideologies, leading to the horrors of the Holocaust.

In terms of applying this idea to today’s world or personal development, it can serve as a cautionary tale about the dangers of both extreme wealth and extreme poverty. On a societal level, it warns against the potential pitfalls of unchecked capitalism and the social unrest that can result from economic inequality. It also highlights the importance of social safety nets to prevent the kind of desperation that can lead to extremism.

On a personal level, it can be a reminder to strive for balance and moderation in all things. Just as extreme wealth can lead to arrogance and a sense of entitlement, extreme poverty can lead to desperation and a willingness to resort to unethical means to survive. Therefore, it’s important to aim for a balanced approach to personal wealth and success, and to remember that both abundance and scarcity can be “poisonous” if not handled wisely.