Variant: All human actions have one or more of these seven causes: chance, nature, compulsions, habit, reason, passion and desire.
我希望我的歌能带给人们快乐和力量。
"The writer's task is to illuminate the shadows of the human soul."
The intelligence of drones will change our way of life.
Stay humble, stay hungry.
The more you sweat in peace, the less you bleed in war.
Chemistry is not just about what you can make, but how you can make it.