“ There's no question that photographs communicate more instantly and powerfully than words do, but if you want to communicate a complex concept clearly, you need words, too. 毫无疑问,照片比文字更能迅速有力地传达信息,但如果你想清晰地传达一个复杂的概念,你也需要文字。 Galen Rowell 加伦·罗威尔
“ Instruction does not prevent wasted time or mistakes; and mistakes themselves are often the best teachers of all. 指导不能防止浪费时间或错误;错误本身往往是最好的老师。 James Anthony Froude 弗劳德