True leadership means making tough decisions with both your head and your heart.
真正的领导力意味着用你的头脑和心灵做出艰难的决定。
Doing the best at this moment puts in the best place for the next moment.
Compassion for animals is intimately connected with goodness of character.
The existence of the natural world is the same kind of fact as the existence of any proposition.
引力解释了行星的运动,但它不能解释谁让行星运动。