In quantum mechanics, we have to abandon the idea that particles have definite properties before measurement.
The past is a different country, they do things differently there.
当四周逐渐阴沉暗淡,理性悄然隐没了光线,希望的火烛摇曳欲熄,我在孤独中徘徊茫然。
Success is not final, failure is not fatal: it is the courage to continue that counts.