What is the significance of the principle "manas ekam vachas ekam karmanyekam mahatmanam" in the teachings of great souls?

The principle "manas ekam vachas ekam karmanyekam mahatmanam" emphasizes the importance of aligning one's thoughts, Words, and actions. Great souls teach that true greatness lies in having harmony between one's mind, speech, and deeds. This principle highlights the power of integrity and consistency in one's character and behavior.