The only way out is in.

Aquaculture isn’t an alternative to wild fisheries—it’s a partner in preserving them.

To every action there is always opposed an equal reaction； or， the mutual actions of two bodies upon each other are always equal， and directed to contrary parts.

The act of writing is an act of defiance.

密码学的本质是允许在存在对手的情况下进行通信。