george washington dreamed to build world-government for world-peace, he died in 1790s, but his dream came true 150 yrs after his death in 1945 when United Nations was started; but today, our dream to save/heal the world can be achieved within our lifetime

If we look at Mahatma Gandhi’s Life, his dream came true only after his death, he worked for it till his death, till 78 yrs

Life ends when we stop dreaming - majnu movie song

https://www.youtube.com/watch?v=ZLIht6heA0g