When life seems hard, the courageous do not lie down and accept defeat; instead, they are all the more determined to struggle for better future.

Doublethink means the power of holding two contradictory beliefs in one's mind simultaneously, and accepting both of them.

The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.

我相信爱与善良的力量。