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I never looked at the consequences of missing a big shot... when you think about the consequences you always think of a negative result.

The essence of causal inference is to go beyond the data and ask what would happen if we intervene.

I believe that if you keep your faith, you keep your trust, you keep the right attitude, if you're grateful, you'll see God open up new doors.

Life is a continual combat.

If you lose or forget to bring a cable，adapter or charger，check with your hotel. Most hotels now have a drawer full of cables，adapters and chargers others have left behind，and probably have the one you are missing. You can often claim it after borrowing it.

In the quest for understanding the cosmos, we must embrace the unknown and the unknowable.

Human kind cannot bear very much reality.

The less secure a man is, the more likely he is to have extreme prejudice.