Recent events have weighed heavily on the notion of tolerance, which Voltaire described nicely in his prayer to God in 1763, some 250 years ago. Despite being a dyed-in-the-wool atheist, I have to admit his text was premonitory:
No longer then do I address myself to men, but to you, God of all beings, of all worlds, and of all ages; if it may be permitted weak creatures lost in immensity and imperceptible to the rest of the universe, to dare to ask something of you, you who have given everything, and whose decrees are immutable as they are eternal. Deign to look with pity on the errors attached to our nature; let not these errors prove ruinous to us. You have not given us hearts to hate ourselves with, and hands to kill one another. Grant then that we may mutually aid each other to support the burden of a painful and transitory life; that the trifling differences in the garments that cover our frail bodies, in our insufficient languages, in our ridiculous customs, in our imperfect laws, in our idle opinions, in all our conditions so disproportionate in our eyes, and so equal in yours, that all the little variations that differentiate the atoms called men not be signs of hatred and persecution; that those who light candles in broad daylight to worship you bear with those who content themselves with the light of your sun; that those who dress themselves in a white robe to say that we must love you do not detest those who say the same thing in cloaks of black wool; that it may be all the same to adore you in a dialect formed from an ancient or a modern language; that those whose coat is colored red or violet, who rule over a little parcel of a little heap of mud of this world, and who possess a few round fragments of a certain metal, enjoy without pride what they call grandeur and riches, and may others look on them without envy: for you know that there is nothing in all these vanities to inspire envy or pride.
May all men remember that they are brothers! May they hold in horror tyranny exerted over souls, just as they do the violence which forcibly seizes the products of peaceful industry! And if the scourge of war is inevitable, let us not hate one another, let us not destroy one another in the midst of peace, and let us use the moment of our existence to bless, in a thousand different languages, from Siam to California, your goodness which has given us this moment.