In computer science, abstraction is the key to managing complexity.
寫作是為無聲者發(fā)聲，照亮我們世界的陰影。
What I want to talk to you about today is the difference between gifts and choices. Cleverness is a gift， kindness is a choice. Gifts are easy -- they're given after all. Choices can be hard. You can seduce yourself with your gifts if you're not careful， and if you do， it'll probably be to the detriment of your choices.