In Cormac McCarthy's book "The Counsellor," the quote "Truth has no temperature" suggests that truth remains constant and unaffected by emotions or circumstances. It implies that reality exists independently of our feelings or perceptions and that it can be challenging to confront without the interference of personal biases or societal pressures.

This idea emphasizes the importance of seeking objective truth, even when it may be uncomfortable or difficult to accept. By recognizing that truth is not influenced by passion or desire, one can achieve a clearer understanding of situations and make more informed decisions.