The fact that man knows right from wrong proves his intellectual superiority to the other creatures; but the fact that he can do wrong proves his moral inferiority to any creatures that cannot.
The two most important days in your life are the day you are born and the day you find out why.
Few things are harder to put up with than the annoyance of a good example.
The man who is a pessimist before 48 knows too much; if he is an optimist after it, he knows too little.
I must have a prodigious quantity of mind; it takes me as much as a week sometimes to make it up.
Thunder is good, thunder is impressive; but it is lightning that does the work.