Paul Tillich

"History is the medium through which spirit actualizes itself."

"Power is the actualization of potential."

"Eros is not mere sexual desire but the drive toward reunion."

"The demonic is not evil but the destructive use of power."

"Conscience is the awareness of our ultimate concern."

"Sin is separation from one's ground of being."

"Salvation is reunification with the ground of being."

"The kairos is the fulfilled moment within chronos."

"Reason and revelation are not antagonistic."

"The symbol opens up dimensions of reality that are closed to ordinary thought."

"Doubt is not the opposite of faith but an element within it."

"The ambiguity of life is the source of all tragedy."

"Person is the bridge between nature and spirit."

"Love is the ethical necessity of being itself."

"The church is the community of those grasped by ultimate concern."

"Idolatry is the elevation of the conditioned to the status of the ultimate."

"The demonic is the tragic element in existence."

"Being is not a genus but the ground of all genera."

"Existence is the estrangement from essence."

"The healing of estrangement is through transformation of the personality."

"The new being conquers the old being through accepting it."

"Self-integration is the aim of human development."

"The demonic expresses itself in compulsion and destructiveness."

"Thou shalt be as thou shouldest become."

"The structure of being determines the structure of knowing."

"Spiritual experience transcends both sense experience and intellectual thought."

"The mystical element is essential to religion."

"Morality is derivative; the ultimate is religious faith."

"Courage is self-affirmation in spite of the fact of nonbeing."

"Meaninglessness is the modern form of anxiety."