Self-contradiction is the only wrong.

I saw that these apparent contradictions were really a test of faith, and that there would be no credit in believing a thing in which there were no difficulties.

He would, no doubt, have preferred another pulpit with other formulas, but that pulpit was not forthcoming; so, like all the strong and the wise, he chose the formulas offered to him, using as few as possible, and humanising all he used; and never for a single second of time, whatever the apparent contradictions on the surface, was Theophilus Londonderry that poorest of all God's creatures,a hypocrite.

For Hegel, on the contrary, contradiction is the very moving principle of the world, the pulse of its life.

Giovanni Bovio thus arrived at the conclusion that this internal contradiction in the science of criminology was the inevitable fate of human justice, and that this justice, struggling in the grasp of this internal contradiction, must turn to the civil law and ask for help in its weakness.

What a contradiction is human nature!