The study of L-functions is a window into the hidden structure of numbers.
Believe in yourself and all that you are.
The only limits you have are the limits you believe.
Every book is a journey, every page a step into the unknown.
We are all haunted by the ghosts of our own making.
假如孩子們的活動正好和他的內在需求相配合，孩子的表現(xiàn)會讓我們他的發(fā)展所需。