To love to read is to exchange hours of ennui for hours of delight.
If you're not failing every now and then, you're not doing anything very innovative.
从亚当和夏娃时代到农业发明之前,人类的生存一定是岌岌可危的,因为他无法确保自己的食物供应。
习惯的强度是其被强化次数的函数。
When you work hard enough and correctly, happiness will knock on the door.