Tertullian

“ Even in peace soldiers inure themselves to war by toils and inconveniences—marching in arms, running over the plain, working at the ditch, making the testudo, engaging in many arduous labours. The sweat of the brow is on everything, that bodies and minds may not shrink at having to pass from shade to sunshine, from sunshine to icy cold, from the robe of peace to the coat of mail, from silence to clamour, from quiet to tumult. ”

“ We, with the crown eternal in our eye, look upon the prison as our training-ground, that at the goal of final judgment we may be brought forth well disciplined by many a trial; since virtue is built up by hardships, as by voluptuous indulgence it is overthrown. ”

“ You are about to pass through a noble struggle, in which the living God acts the part of superintendent, in which the Holy Ghost is your trainer, in which the prize is an eternal crown of angelic essence, citizenship in the heavens, glory everlasting. ”