The elements of consciousness are to be determined by systematic observation.
生命短暂，让它甜美。
When we no longer have the power to change a situation, we are challenged to change ourselves.
The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little.
Every discovery builds on the work of those who came before us.
The world is what it is; men who are nothing, who allow themselves to become nothing, have no place in it.