As the speaker says in Longfellow’s poem ‘A Psalm of Life’, the lives of great men remind us that we can make this life an inspiring one, leaving behind us footprints for others to follow. This way we can help distressed people cross this ocean of life easily.
 
Actually, the lives of great men deliver a positive aura around themselves and inspire others who are otherwise sad, distressed, dejected, hit by failures and hurdles of this vast life. Thus those great people sow the seeds of success and positivity in the society.