The strength of a response tendency depends on the amount of reinforcement received.
在商业中,如果你不前进,你就在落后。
过去是幽灵,未来是梦,我们拥有的只有现在。
我们看起来似乎痛苦的试炼,往往是伪装起来的好运。
The great philosophers are those who have made a difference in the way we think about the world and our place in it.