Theoretical physics is to mathematics what sculpture is to geometry.
理论物理学之于数学，犹如雕塑之于几何学。
It is the tears of the earth that keep her smiles in bloom。
"Every story is a journey, and every journey changes the traveler."
The principles of learning are universal across species.
History is written by the victors, but art can rewrite it.
It is vain to talk of the interest of the community， without understanding what is the interest of the individual.
The best books are the ones that children want to read again and again.
"You can't manage what you don't measure."