“The peasantry, having lifted itself up out of its medieval status, cannot politically generate it's own rage. — Speech in Paris, 1934”

Introduction
The Wedge (1944)
Context: Each speech having its own character, the poetry it engenders will be peculiar to that speech also in its own intrinsic form. The effect is beauty, what in a single object resolves our complex feelings of propriety.

p 110
The Undiscovered Self (1958)
Context: We are living in what the Greeks called the right time for a "metamorphosis of the gods," i. e. of the fundamental principles and symbols. This peculiarity of our time, which is certainly not of our conscious choosing, is the expression of the unconscious man within us who is changing. Coming generations will have to take account of this momentous transformation if humanity is not to destroy itself through the might of its own technology and science.

2010s, Free Speech and Its Present Crisis (2018)

Remarks by the President to the UN General Assembly https://www.whitehouse.gov/the-press-office/2012/09/25/remarks-president-un-general-assembly (25 September 2012), quoted in "President Obama Condemns Both ‘Disgusting’ Anti-Islam Video And ‘Mindless’ Violence Before The U.N." http://www.mediaite.com/tv/president-obama-condemns-both-disgusting-anti-islam-video-and-mindless-violence-before-the-u-n/ by Andrew Kirell, mediaite.com.
2012
Context: In every culture, those who love freedom for themselves must ask themselves how much they're willing to tolerate freedom for others. That is what we saw play out in the last two weeks, as a crude and disgusting video sparked outrage throughout the Muslim world. Now, I have made it clear that the United States government had nothing to do with this video, and I believe its message must be rejected by all who respect our common humanity. It is an insult not only to Muslims, but to America as well. [... ] I know there are some who ask why we don't just ban such a video. And the answer is enshrined in our laws: Our Constitution protects the right to practice free speech. Here in the United States, countless publications provoke offense. Like me, the majority of Americans are Christian, and yet we do not ban blasphemy against our most sacred beliefs. As President of our country and Commander-in-Chief of our military, I accept that people are going to call me awful things every day -- (laughter) -- and I will always defend their right to do so. (Applause.) [... ] The strongest weapon against hateful speech is not repression; it is more speech -- the voices of tolerance that rally against bigotry and blasphemy, and lift up the values of understanding and mutual respect. [... ] On this we must agree: There is no speech that justifies mindless violence. (Applause.) There are no words that excuse the killing of innocents. There's no video that justifies an attack on an embassy. There's no slander that provides an excuse for people to burn a restaurant in Lebanon, or destroy a school in Tunis, or cause death and destruction in Pakistan.

Source: The God Delusion (2006), p. 178

Actually a statement by William J. H. Boetcker known as "The Ten Cannots" (1916), this has often been misattributed to Lincoln since 1942 when a leaflet containing quotes by both men was published.
Misattributed
Context: You cannot bring about prosperity by discouraging thrift. You cannot strengthen the weak by weakening the strong. You cannot help small men by tearing down big men. You cannot help the poor by destroying the rich. You cannot lift the wage earner by pulling down the wage payer. You cannot keep out of trouble by spending more than your income. You cannot further the brotherhood of man by inciting class hatreds. You cannot establish security on borrowed money. You cannot build character and courage by taking away a man's initiative and independence. You cannot help men permanently by doing for them what they could and should do for themselves.

Source: Clockwork Angel

Source: The Revolution Betrayed (1936), Ch. 7