“The Bible is not my book nor Christianity my profession. I could never give assent to the long, complicated statements of Christian dogma.”

“Every man is said to have his peculiar ambition. Whether it be true or not, I can say, for one, that I have no other so great as that of being truly esteemed of my fellow-men by rendering myself worthy of their esteem.”

“My great concern is not whether you have failed, but whether you are content with your failure.”

“It is difficult to make a man miserable while he feels worthy of himself and claims kindred to the great God who made him.”

“The loss of enemies does not compensate for the loss of friends.”

“I now leave, not knowing when or whether I may return, to a task before me greater than that which rested upon Washington. Without the assistance of that Divine Being who ever attended him, I cannot succeed. With that assistance, I cannot fail. Trusting in Him, who can go with me, and remain with you and be everywhere for good, let us confidently hope that all will yet be well. To His care commending you, as I hope in your prayers you will commend me, I bid you an affectionate farewell.”

“It often requires more courage to dare to do right than to fear to do wrong.”

“My earlier views of the unsoundness of the Christian scheme of salvation and the human origin of the scriptures have become clearer and stronger with advancing years, and I see no reason for thinking I shall ever change them.”

“Upon the subject of education, not presuming to dictate any plan or system respecting it, I can only say that I view it as the most important subject which we as a people can be engaged in.”

“You can fool some of the people all of the time, and all of the people some of the time, but you can not fool all of the people all of the time.”

“Four score and seven years ago our fathers brought forth on this continent a new nation, conceived in liberty and dedicated to the proposition that all men are created equal. Now we are engaged in a great civil war, testing whether that nation or any nation so conceived and so dedicated can long endure. We are met on a great battlefield of that war. We have come to dedicate a portion of that field as a final resting-place for those who here gave their lives that that nation might live. It is altogether fitting and proper that we should do this. But in a larger sense, we cannot dedicate, we cannot consecrate, we cannot hallow this ground. The brave men, living and dead who struggled here have consecrated it far above our poor power to add or detract. The world will little note nor long remember what we say here, but it can never forget what they did here. It is for us the living rather to be dedicated here to the unfinished work which they who fought here have thus far so nobly advanced. It is rather for us to be here dedicated to the great task remaining before us — that from these honored dead we take increased devotion to that cause for which they gave the last full measure of devotion — that we here highly resolve that these dead shall not have died in vain, that this nation under God shall have a new birth of freedom, and that government of the people, by the people, for the people shall not perish from the earth.” 

“No man is good enough to govern another man without that other’s consent.”

“Let no feeling of discouragement prey upon you, and in the end you  are sure to succeed.”

“I can see how it might be possible for a man to look down upon the earth and be an atheist, but I cannot conceive how a man could look up into the heavens and say there is no God.”

“My concern is not whether God is on our side; my greatest concern is to be on God's side, for God is always right.”