“Evil is the product of the ability of humans to make abstract that which is concrete.”

Simplified Meaning:

When people start to think of real things or actions in a detached, purely theoretical way, rather than seeing them as real and impactful, they might do harmful things because they stop seeing the real consequences. Take war, for example. If leaders think about war just in terms of numbers, strategies, or power, they might make decisions that cause lots of suffering because they forget about the real people who get hurt. Another example is how companies sometimes treat employees as just parts of a machine, not as individuals with feelings and needs. This can lead to unfair treatment or harsh working conditions. So, if someone wants to avoid adding to the harm in the world, they should always try to stay connected to the real effects of their actions and remember the human side of any situation.