Love is not the stupidest thing a man does, but it cannot be blamed on gravity.
Thinking is to man what flying is to birds. Don’t follow the example of a chicken when you could be a lark.
When you look at yourself from a universal standpoint, something inside always reminds or informs you that there are bigger and better things to worry about.
A country cannot simultaneously prepare and prevent war.
[Ernest Rutherford is]...a second Newton.
Mere thinking cannot reveal to us the highest purpose.