One should cultivate good habits of memory, for it is capable of making existence a Paradise or an Inferno.

Oh life, you should never had begun, but since you did, you should never end

You should avoid making yourself too clear even in your explanations.

Self-reflection is the school of wisdom.

True knowledge lies in knowing how to live.

Know the great men of your age.

To find one real friend in a lifetime is good fortune; to keep him is a blessing.