The main weakness of Western civilization is a propensity to tolerate ideas and actions that would undermine it. The paradox is that the main strength of Western civilization is a propensity to tolerate ideas and actions that would strengthen it. The survival and improvement of Western civilization requires carefully balancing the two propensities. It has long been evident in continental Europe and the British Isles that the balance has swung toward destructive toleration. The United States is rapidly catching up to Europe. At the present rate the intricate network of social relationships and norms that has made America great will be destroyed within a decade. Israel, if it remains staunchly defensive of its heritage, will be the only Western nation still worthy of the name.