Every body continues in its state of rest， or of uniform motion in a right line， unless it is compelled to change that state by forces impressed upon it.
如果物体处于静止状态或作匀速直线运动，只要没有外力作用，物体将保持静止状态或匀速直线运动状态。
The best way to have a good idea is to have a lot of ideas.
The probability of a response is determined by its reinforcement history.
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
We are comfortable planting seeds and waiting for them to grow into trees.