The only way to learn mathematics is to do mathematics.
The best way to untangle a knotty tangle is not to “untie” the knots, but to keep pulling the loops apart wider and wider. Just make the mess as big, loose and open as possible. As you open up the knots they will unravel themselves. Works on cords, strings, hoses, yarns, or electronic cables.
I don't know where I'm gonna go, but I'm gonna go there dancing.
最伟大的故事是那些挑战我们成长的故事。
The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.
The truth is not always beautiful, nor beautiful words the truth.