Kevin Smith

“The time will come when diligent research over long periods will bring to light things which now lie hidden. A single lifetime, even though entirely devoted to the sky, would not be enough for the investigation of so vast a subject... And so this knowledge will be unfolded only through long successive ages. There will come a time when our descendants will be amazed that we did not know things that are so plain to them... Many discoveries are reserved for ages still to come, when memory of us will have been effaced.”
― Seneca, Natural Questions

“If what philosophers say of the kinship of God and Man be true, what remains for men to do but as Socrates did:—never, when asked one's country, to answer, "I am an Athenian or a Corinthian," but "I am a citizen of the world.”
― Epictetus, The Golden Sayings of Epictetus

“If anyone can refute me—show me I’m making a mistake or looking at things from the wrong perspective—I’ll gladly change. It’s the truth I’m after, and the truth never harmed anyone. What harms us is to persist in self-deceit and ignorance.”
― Marcus Aurelius, Meditations

“All cruelty springs from weakness.”
― Seneca, Seneca's Morals: Of a Happy Life, Benefits, Anger and Clemency