If they can make penicillin out of moldy bread, they can sure make something out of you.
Don't count the days; make the days count.
Only a man who knows what it is like to be defeated can reach down to the bottom of his soul and come up with the extra ounce of power it takes to win when the match is even.
I'm so mean, I make medicine sick.
He who is not courageous enough to take risks will accomplish nothing in life.