Love is a better teacher than duty.
Nothing is more destructive of respect for the government and the law of the land than passing laws which cannot be enforced.
The significant problems we face cannot be solved at the same level of thinking we were at when we created them.
There are only two ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.