Marcus Tullius Cicero

(3 January 106 BC – 7 December 43 BC) Roman statesman, lawyer, scholar, philosopher, and academic skeptic, who tried to uphold optimate principles during the political crises that led to the establishment of the Roman Empire.

He who understands his soul will understand the divine spark within himself.
There is only one eternal law. It does not change and it governs all people at all times.
It is not a virtue, but a kind of deceitful similitude, to fulfill our duty for the purpose of its reward.
Even if I err in saying that the soul is eternal, nevertheless I am happy that I made this mistake. And while I am alive, not a single person can take away this assurance which gives me complete calmness and great satisfaction.
I do not regret that I was born here and that I lived part of my life here, because I lived in a way that I think was useful. When the end comes, I will leave my life in the same way, as if I leave an inn and not my home, because I think that my stay in this life is temporary and that death is only a transfer to another state.
The souls of wise people look to the future state of their existence; all of their thoughts are concentrated toward eternity.
No illness can prevent a person from what he has to do. If you cannot work, then give your love to people. Illnesses of the mind are much more dangerous than illnesses of the body.
The desire for wealth can never be satisfied. Those who have it are excited by the wish to have more, and yet more.
Our last day does not bring destruction, only a change.
The reward for virtue is the understanding of the good deed.
The clearest and simplest notions are almost always concealed by sophisticated meditations.
Human dignity and freedom are our constant necessities. So, let us keep them with us, or let us die with dignity.
The really true and unchanging law, that law which gives us true direction and which forbids us to do bad things, is the intellect of a higher, superior being.
Strong thoughts which are expressed in a powerful way aid the improvement of life.
Everything is indefinite, misty, and transient; only virtue is clear, and it cannot be destroyed by any force.
There is a certain limit to the appropriate length of any time in this world. Just as the fruits and vegetables are limited by the seasons of the year, everything should have its beginning, its life, and its ending, after which it should pass away. Wise people willingly submit to this order.
Whatever name you give to the origin of man, this spiritual quality of humans to understand, feel, and exist, it is holy, it is divine, and, therefore, it should be eternal.
When Socrates was asked where he came from, he said that he was a citizen of the world. He regarded himself as a citizen of the universe.