Quote by Francesco Petrarch
"The greatest discovery of all time is that a person can change his future by merely changing his attitude."
More from Francesco Petrarch
"A man of wise and noble character is prevented by conscience from doing many things that are permitted by law."
"It is more honorable to be raised to a throne than to be born to one."
"Who overindulges in the present moment loses the future."
"Five enemies of peace inhabit with us: avarice, ambition, envy, anger, and pride."