Let the emperor make war on heaven; let him lead heaven captive in his triumph; let him put guards on heaven; let him impose taxes on heaven! He cannot. . . . He gets his sceptre where he first got his humanity; his power where he got the breath of life.
TertullianThus the connection of the Father in the Son, and of the Son in the Paraclete, produces three coherent Persons, who are yet distinct One from Another. These three are one [thing], not one [Person], as it is said, 'I and my Father are One,' in respect of unity of substance not singularity of number.
TertullianMen remain in ignorance as long as they hate, and they hate unjustly as long as they remain in ignorance.
TertullianPrevention of birth is premature murder, and it makes no difference whether it is a life already born that one snatches away or a life that is coming to birth.
TertullianKeep always in mind the rule of faith which I profess and by which I bear witness that the Father and the Son and the Spirit are inseparable from each other, and then you will understand what is meant by it. Observe now that I say the Father is other [distinct], the Son is other, and the Spirit is other. This statement is wrongly understood by every uneducated or perversely disposed individual, as if it meant diversity and implied by that diversity a separation of Father, Son, and Holy Spirit
Tertullian