The only constant in life is change.
生活中唯一不变的是变化。
Security is not an add-on feature but the foundation.
The true genius shudders at incompleteness — and usually prefers silence to saying something which is not everything it ought to be.
A religion that gives nothing, costs nothing, and suffers nothing, is worth nothing.
杀死一个幽灵比杀死一个现实要困难得多。
The truth is a knife, and it cuts both ways.
You have to believe in yourself when no one else does.