恐龙灭绝是因为它们没有太空计划。如果我们因为没有太空计划而灭绝，那是我们活该！
The dinosaurs became extinct because they didn't have a space program. And if we become extinct because we don't have a space program, it'll serve us right!
Psychology must be a guide to practical living.
The beauty of literature lies in its ability to transcend time and space.
Until one has loved an animal, a part of one's soul remains unawakened.
The laws of nature are unforgiving.
空谈无益，给我看代码。