How to use "essential" in a sentence

"Resolved: that the maintenance inviolate of the rights of the States, and especially the right of each State to order and control its own domestic institutions according to its own judgment exclusively, is essential to that balance of power on which the perfection and endurance of our political fabric depend, and we denounce the lawless invasion by armed force of the soil of any State or Territory, no matter under what pretext, as among the gravest of crimes."

In every dark hour of our national life, a leadership of frankness and of vigor has met with that understanding and support of the people themselves which is essential to victory

Our Constitution is so simple, so practical that it is possible always to meet extraordinary needs by changes in emphasis and arrangement without loss of essential form

We do not distrust the future of essential democracy