The real prison is not the one made of iron bars, but the one made of fear.
真正的监狱不是由铁条制成的，而是由恐惧制成的。
Remember that wherever your heart is, there you will find your treasure.
The more determinedly I exist, as myself, within the conditions of the time, the more clearly I shall hear the language of the past, the nearer I shall feel the breath of the centuries.
通往善的道路就是通往真理的道路。
Probability theory is nothing but common sense reduced to calculation.
The joy of mathematics comes from the struggle to understand.
Profit without sustainability is short-term gain with long-term pain.