When we are no longer able to change a situation, we are challenged to change ourselves.

The most important thing is to be true to yourself.

The most effective debugging tool is still careful thought, coupled with judiciously placed print statements.

To talk about painting is not only difficult but perhaps pointless too.

当老人们种下他们知道自己永远不会坐在其下的树时，社会就会变得伟大。