Good means not merely not to do wrong, but rather not to desire to do wrong.
理解程序的最好方法是尝试改变它。
希望存在于任何黑暗中。
The essence of mathematics is not to make simple things complicated, but to make complicated things simple.
The most important thing in life is to stop saying 'I wish' and start saying 'I will.'
The best way to predict the future is to create it.