Imitation of Christ

Quod si sentire suum magis sequi, quam aliis exercitatis credere volunt, erit eis periculosus exitus, sed tamen retrahi a proprio conceptu non valuerint. Raro sibi ipsis sapientes, ab aliis regi humiliter patiuntur. Melius est modicum sapere cum humilitate, et parva intelligentia quam magi scientiarum thesauri cum vana complacentia. Melius est minus habere, quam multum, unde osses superbire. Non satis discrete agit, qui se totum lætitiæ tradidit, obliviscens pristinæ inopiæ suæ, et casti timoris Domini, qui non timet gratiam oblatam amittere. Non etiam satis virtuose sapit, qui tempore adversitatis et cujuscumque gravitatis nimis desperate se gerit, et minus fidenter de me, quam oportet, cogitat ac sentit.

But if they wish to follow their own fancies rather than trust the experience of others, the result will be very dangerous to them if they still refuse to be drawn away from their own notion. Those who are wise in their own conceits, seldom patiently endure to be ruled by others. It is better to have a small portion of wisdom with humility, and a slender understanding, than great treasures of sciences with vain self-esteem. It is better for you to have less than much of  what may make you proud. He is not very discrete who gives up himself entirely to joy, forgetting his former helplessness and the chaste fear of the Lord, which fears to lose the grace offered. Nor is he very wise, after a manly sort, who in time of adversity, or any trouble whatsoever, bears himself too despairingly, and feels concerning Me less trustfully than he ought.

Imitation of Christ, III, 7:3