Questão 1687312

Read the text to answer questions 26 to 30.

Men fear thought as they fear nothing else on earth – more than ruin, more even than death. Thought is subversive and revolutionary, destructive and terrible; thought is merciless to privilege, established institutions, and comfortable habits; thought is anarchic and lawless, indifferent to authority, careless of the well-tried wisdom of the ages. Thought looks into the pit of hell and is not afraid.

Bertrand Russell (“Why Men Fight: A Method of Abolishing the International Duel”, pp. 178-179)

Regarding the words careless, lawless, and merciless in the text, what does the suffix '-less' mean?