Memento mori - remember death! These are important words. If we kept in mind that we will soon inevitably die, our lives would be completely different. If a person knows that he will die in a half hour, he certainly will not bother doing trivial, stupid, or, especially, bad things during this half hour. Perhaps you have half a century before you die-what makes this any different from a half hour?

It is within my power either to serve God or not to serve Him. Serving Him, I add to my own good and the good of the whole world. Not serving Him, I forfeit my own good and deprive the world of that good, which was in my power to create.

Boredom is desire seeking desire.

Knowledge is real knowledge only when it is acquired by the efforts of your intellect, not by memory

Conceit is incompatible with understanding.

Every lie is a poison; there are no harmless lies. Only the truth is safe. Only the truth gives me consolation - it is the one unbreakable diamond.

We live in this world like a child who enters a room where a clever person is speaking. The child did not hear the beginning of the speech, and he leaves before the end; and there are certain things which he hears but does not understand