发现的旅程充满了不确定性，但正是这些不确定性使科学如此令人兴奋。

You have to be true to yourself. Strong enough to be true to yourself. Brave enough to be strong enough to be true to yourself. Healthy enough to be brave enough to be strong enough to shape yourself from what you actually are.

量子引力问题不仅是物理学的问题，也是科学哲学的问题。

In the end, we are all alone with our own thoughts and our own fears.

The United States, in their expansive capacity, are capable of containing within their limits the whole population of the earth.