...With the triumph of Christian morality, the life instincts were perverted and constrained...
The past becomes master over the present, and life a tribute to death...
The traditional form of reason is rejected [by Nietzsche] on the basis of the experience of being-as-end-in-itself - as joy (Lust) and enjoyment. The struggle against time is waged from this position: the tyranny of becoming over being must be broken if man is to come himself in a world which it truly his own. As long as there is the uncomprehended and unconquered flux of time - senseless loss, the painful 'it was' that will never be again - being contains the seed of destruction which perverts good to evil and vice versa. Man comes to himself only... ....when eternity has become present in the here and now."
Herbert Marcuse Eros and Civilization (1956 [1998]) p.121-122