The good: Readable, some parts rather interesting
The bad: Overwhelmingly Eurocentric, white supremacist, and patriarchal view of history, some factual errors, some misinterpretations (his discussions on Marx, modern art were issues for me), and oversights (postmodernist, postcolonialist thought)
The ugly: No source citations or bibliography; his predictions for the 21st century already seem unlikely (his biases certainly hindered him).