"The greatest dangers to liberty lurk in the insidious encroachment by men of zeal, well meaning but without understanding"

This quote by Louis D. Brandeis is a warning about the threats of liberty being removed by those who are well-meaning but do not have understanding. He is recommending that those who are passionate and zealous about their beliefs can be a threat to liberty if they do not comprehend the repercussions of their actions. He is cautioning versus allowing individuals to make choices without considering the potential repercussions. He is also cautioning against enabling individuals to remove liberty without comprehending the implications of their actions. He is stressing the importance of understanding the effects of our actions before we take them. He is suggesting that we should know the potential threats of allowing individuals to eliminate our liberty without understanding the ramifications of their actions. He is advising us that we should be vigilant in protecting our liberty and that we must know the potential risks of enabling people to take away our liberty without understanding the ramifications of their actions.