The passions that incline men to peace are fear of death, desire of such things as are necessary to commodious living, and a hope by their industry to obtain them.

我们肩上背负的责任重在，必须小心谨慎地了解可能可能会泯灭孩子精神的原因，并要融入孩子的世界。

最好的技术是无形的——它只是无缝地运作。

I have come to believe that a great teacher is a great artist and that there are as few as there are any other great artists. Teaching might even be the greatest of the arts since the medium is the human mind and spirit.

To lose one parent may be regarded as a misfortune; to lose both looks like carelessness.

森林的真正价值永远不能仅用板材英尺来衡量。