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Silence can be the loudest form of protest.
Mathematics is a living subject, constantly evolving and growing.
The deepest theorems in mathematics often have the simplest statements.
卖出股票的最佳时机几乎永远不会到来。
Take responsibility for your life. Know that it is you who will get you where you want to go, no one else.
Change doesn't happen overnight, but every step forward is a step in the right direction.
The greatest wisdom is to recognize one's own ignorance.