Wisdom is knowing when you can't be wise. Autore: Muhammad Ali Copy Quote More from Muhammad Ali “I hated every minute of training, but I said, 'Don't quit. Suffer now and live …” “I am the greatest, I said that even before I knew I was.” “Rivers, ponds, lakes and streams — they all have different names, but they all …” “It's not bragging if you can back it up.”