“Mental pain is less dramatic than physical pain, but it is more common and also more hard to bear. The frequent attempt to conceal mental pain increases the burden: it is easier to say 'My tooth is aching' than to say 'My heart is broken'. Yet if the cause is accepted and faced, the conflict will strengthen and purify the character and in time the pain will usually pass. Sometimes, however, it persists and the effect is devastating; if the cause is not faced or not recognised, it produces the dreary state of the chronic neurotic. But some by heroism overcome even chronic mental pain. They often produce brilliant work and strengthen, harden, and sharpen their characters till they become like tempered steel.”