From Apollonius I learned freedom of will and undeviating steadiness of purpose; and to look to nothing else, not even for a moment, except to reason; and to be always the same, in sharp pains, on the occasion of the loss of a child, and in long illness.

"Sweep me up and send me where you please." For there I will retain my spirit, tranquil and content, as long as it can feel and act in harmony with its own nature. Is a change of place enough reason for my soul to become unhappy and worn, for me to become depressed, humbled, cowering, and afraid? Can you discover any reasons for this?

From the philosopher Catulus, never to be dismissive of a friend's accusation, even if it seems unreasonable, but to make every effort to restore the relationship to its normal condition.

The constant recollection of death is the test of human conduct.

Remember that all things are only opinion and that it is in your power to think as you please.

Never let the future disturb you. You will meet it, if you have to, with the same weapons of reason which today arm you against the present.

A man must stand erect, not be kept erect by others.