The greatest truths are often the ones we cannot put into words.

预测未来的最好方法就是创造未来。

译文：一心想完成替君主收复国家失地的大业，争取生前死后都留下为国立功的美名。可叹如今满头白发已经丛生!

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.

如果你不犯错，说明你不够努力。