The man who is a pessimist before 48 knows too much; if he is an optimist after it, he knows too little.
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.
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.
Nothing so needs reforming as other people's habits.