Truism, Altruism 1. That one has to reap what one sows is a truism. 2. The altruism uttered by the seer covered the higher levels of spiritual knowledge. In which of the sentences given above has/have the words been used correctly?

Only sentence 1 uses the word correctly. A 'truism' is a self-evident truth or platitude, and 'one reaps what one sows' is indeed a classic truism. Sentence 2 incorrectly uses 'altruism' (which means selfless concern for the well-being of others) in a context that requires a word meaning 'wisdom' or 'aphorism'. Altruism cannot be 'uttered'; it is a quality or behaviour, not speech. Therefore, only sentence 1 is correct.