Wisdom is nothing more than healed pain.
What a cruel thing is war: to separate and destroy families and friends, and mar the purest joys and happiness God has granted us in this world; to fill our hearts with hatred instead of love for our neighbors, and to devastate the fair face of this beautiful world. - letter to his wife, 1864
The education of a man is never complete until he dies.
We have fought this fight as long, and as well as we know how. We have been defeated. For us as a Christian people, there is now but one course to pursue. We must accept the situation.
Duty is the sublimest word in the language. You can never do more than your duty. You should never wish to do less.