Meaning: Thomas Jefferson, the third President of the United States, made the statement, "The good opinion of mankind, like the lever of Archimedes, with the given fulcrum, moves the world." This quote reflects Jefferson's belief in the power of public opinion and the influence it can have on society and the world at large.

In this quote, Jefferson draws a comparison between the good opinion of mankind and the lever of Archimedes, a famous ancient Greek mathematician, engineer, and inventor. The lever of Archimedes is a simple machine that consists of a rigid bar (the lever), a pivot point (fulcrum), and a force applied to one end of the bar to move an object at the other end. Jefferson's analogy suggests that the good opinion of mankind, when properly positioned and supported, has the potential to exert significant force and influence, much like a lever with a well-placed fulcrum.

By likening the good opinion of mankind to the lever of Archimedes, Jefferson emphasizes the transformative power of public sentiment. He implies that when people hold positive and constructive opinions, they can effectively move the world, bring about change, and shape the course of events. This aligns with Jefferson's democratic and idealistic beliefs, as he was a proponent of individual liberty, equality, and the power of the people to govern themselves.

Furthermore, the reference to the lever of Archimedes also speaks to Jefferson's admiration for scientific and mathematical principles. As a scholar and a polymath, Jefferson was deeply interested in various fields of knowledge, including natural philosophy (what we now call science), and he often incorporated scientific concepts into his writings and speeches. By invoking the lever of Archimedes, Jefferson not only underscores the potency of public opinion but also underscores the universality of scientific principles and their applicability to human affairs.

Additionally, the quote reflects Jefferson's understanding of the interconnectedness of human society and the importance of shared values and beliefs. He recognizes that the collective opinions and attitudes of mankind can serve as a unifying force, capable of driving progress and shaping the world in a positive direction. This notion aligns with Jefferson's vision of a harmonious and enlightened society, where the common good is upheld, and individuals work together for the betterment of all.

In conclusion, Thomas Jefferson's quote about the good opinion of mankind and the lever of Archimedes encapsulates his belief in the transformative power of public sentiment and its ability to shape the world. By drawing parallels between the two, Jefferson emphasizes the influence of positive public opinion and its potential to bring about meaningful change. Furthermore, the quote reflects Jefferson's appreciation for scientific principles and his understanding of the interconnectedness of human society. Overall, this quote serves as a reminder of the profound impact that collective goodwill and shared values can have on the world at large.