The art of cryptography is to make the cost of breaking the system exceed the value of the information protected.

积极情绪就像是心灵的营养，帮助我们成长和蓬勃发展。

I must confess that I never could see any beauty in her. Her face is too thin; her complexion has no brilliancy; and her features are not at all handsome. Her nose wants character; there is nothing marked in its lines. Her teeth are tolerable, but not out of the common way; and as for her eyes, which have sometimes been called so fine, I could never see anything extraordinary in them.

"We are all in the gutter, but some of us are looking at the stars."

Education begins the gentleman, but reading, good company and reflection must finish him.