数学不是观赏性运动，你必须参与其中才能理解。
Mathematics is not a spectator sport; you have to play to understand.
A person needs to walk how many roads to become a real person.
"The truth is, unless you let go, unless you forgive yourself, unless you forgive the situation, unless you realize that the situation is over, you cannot move forward."
Man has no right to kill his brother. It is no excuse that he does so in uniform.