This engages a question: 

We can all agree that 1+1=2 as being truth. 

But how do you define truth when it comes to emotions/ideas/beliefs? How can we find collective agreement on matters pertaining to religion, politics, culture etc? Who gets to dictate whose free speech about any ideology is true and whose is false? 

 There’s a quote from André Gide that read:

“Believe those who are seeking the truth. Doubt those who find it.”

Food for thought.