This is why I love William Lane Craig.

To those who think there is no real truth, what history teaches is:

that all the world was mad in the past; men always thought they were right, and that led to wars, persecutions, slavery, xenophobia, racism, and chauvinism.  The point is not to correct the mistakes and really be right; rather, it is not to think you are right at all.

. . . [T]he very concept of tolerance entails that one does not agree with that which one tolerates.  The Christian is committed to both truth and tolerance, for he believes in Him who said not only, “I am the truth,” but also, “Love your enemies.”

(From “In Intellectual Neutral – a challenge to Christians to intellectual engagement.”   Read the entire essay at https://www.reasonablefaith.org/writings/popular-writings/apologetics/in-intellectual-neutral/.)