行为由当前刺激情境和过去的强化历史决定。

In programming, everything we do is a special case of something more general -- and often we know it too quickly.

Listen here. Human kindness can't be bought for pennies or silver. Kindness is kindness. Pennies and silver are pennies and silver. Can't mix the wheat with the chaff.

Every day is a new opportunity.

You don't have to be perfect to be loved.