“In politics nothing is immutable. Events carry within them an invincible power.”

On Dramatic Poetry (1758)

No Compromise – No Political Trading (1899)

Variant: I became aware that the invincible power that has moved the world is unrequited, not happy, love.
Source: Memories of My Melancholy Whores

Reflections of a Siamese Twin (1997)

As quoted in Michel Foucault (1991) by Didier Eribon, as translated by Betsy Wind, Harvard University Press, p. 282
Context: There are more ideas on earth than intellectuals imagine. And these ideas are more active, stronger, more resistant, more passionate than "politicians" think. We have to be there at the birth of ideas, the bursting outward of their force: not in books expressing them, but in events manifesting this force, in struggles carried on around ideas, for or against them. Ideas do not rule the world. But it is because the world has ideas (and because it constantly produces them) that it is not passively ruled by those who are its leaders or those who would like to teach it, once and for all, what it must think.

Source: Simone Weil : An Anthology (1986), Attention and Will (1947), p. 216

The Art of Peace (1992)
Variant: The Art of Peace is invincible because it contends with nothing.
Context: There are no contests in the Art of Peace. A true warrior is invincible because he or she contests with nothing. Defeat means to defeat the mind of contention that we harbor within.

Source: Speaker for the Dead

Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 156.