The only real mistake is the one from which we learn nothing.
The best solutions often come from the intersection of old wisdom and new science.
死者总是与我们同在,我们也总是与他们同在。
我不遵循任何特定的理论,我只做我认为正确的事。
一个试图教学而不激发学生学习欲望的教师,就像在冷铁上敲打。
在分心的环境中,阅读的行为是一种抵抗行为。