History is not the past. It is the method we have evolved of organizing our ignorance of the past.
历史不是过去。它是我们进化出来的组织我们对过去的无知的方法。
Courage is the first of virtues.
学习应使人感到快乐,否则不能称之为真正的学习。
Continuous effort - not strength or intelligence - is the key to unlocking our potential.