A most important, but also most elusive, aspect of any tool is its influence on the habits of those who train themselves in its use. If the tool is a programming language this influence is, whether we like it or not, an influence on our thinking habits. (關於工具，一個最重要的，也是最不易察覺的方面是，工具對使用此工具的人的習慣的潛移默化的影響。如果這個工具是一門程序語言，不管我們是否喜歡它，它都會影響我們的思維慣式。 –Edsger Dijkstra, 計算機科學家，著名的“程序=數據結構+算法”的提出者)
— Edsger Dijkstra, computer scientist
Being abstract is something profoundly different from being vague… The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise. (抽象和模糊完全地不同，抽象的目的並不是把事情變模糊，而去創建一個新的語義層，在那裏是絕對精確的描述。)
— Edsger Dijkstra
Besides a mathematical inclination, an exceptionally good mastery of one’s native tongue is the most vital asset of a competent programmer. (除了數學愛好，對於一個有能力的程序員來說，出色地掌握自己的母語是最寶貴的財富。)
— Edsger Dijkstra