You can't be happy unless you're unhappy sometimes.
Lauren Oliver
Don't be afraid of failure. This is the way to succeed.
LeBron James
There is no greatness where there is not simplicity, goodness, and truth.
Leo Tolstoy
It had long since come to my attention that people of accomplishment rarely sat back and let things happen to them. They went out and happened to things.
Leonardo da Vinci
Make your work to be in keeping with your purpose
Study without desire spoils the memory, and it retains nothing that it takes in.