"There is nothing more corrupting, nothing more destructive of the noblest and finest feelings of our nature, than the exercise of unlimited power"

In this quote, William Henry Harrison is cautioning against the dangers of having too much power. He thinks that having unrestricted power can corrupt a person and damage the most honorable and pure feelings within them. This corruption can lead to damaging actions and decisions that break the natural goodness of humanity. Harrison is stressing the value of checks and balances in a society to avoid the abuse of power. He thinks that when a single person or group has excessive power, it can cause negative effects for both the individual and society as a whole.