It is better, of course, to know useless things than to know nothing.
It is more fitting for a man to laugh at life than to lament over it.
Every guilty person is his own hangman.
As long as you live, keep learning how to live.
To be always fortunate and to pass through life with a soul that has never known sorrow is to be ignorant of one half of nature.
Our plans miscarry because they have no aim. When a man does not know what harbor he is making for, no wind is the right wind.