“ Sorrow prepares you for joy. It violently sweeps everything out of your house, so that new joy can find space to enter. It shakes the yellow leaves from the bough of your heart, so that fresh, green leaves can grow in their place. It pulls up the rotten roots, so that new roots hidden beneath have room to grow. Whatever sorrow shakes from your heart, far better things will take their place. ” ― Rumi
When John Nash won the Nobel prize in economics in 1994, many people were surprised to learn that he was alive and well. Since then, Sylvia Nasar's celebrated biography A Beautiful Mind, the basis of a new major motion picture, has revealed the man. The E
![Principles and Practices (4th Edition) [John F. Wakerly].](https://cdn.pdfdrive.com/assets/thumbs/032/03286a2cbbe33d5c5d9c29899f0d240a-s.jpg "Principles and Practices (4th Edition) [John F. Wakerly].")
