If thou knewest the whole Bible by heart, and the sayings of all the philosophers, what would it profit thee without the love of God and without grac… - Thomas à Kempis

thou art far weaker than thou art able to comprehend. Let, therefore, nothing which thou doest seem to thee great; let nothing be grand, nothing of value or beauty, nothing worthy of honour, nothing lofty, nothing praiseworthy or desirable, save what is eternal

What is it then? That having given up all things besides, he give up himself and go forth from himself utterly, and retain nothing of self-love; and having done all things which he knoweth to be his duty to do, that he feel that he hath done nothing.

And because many seek knowledge rather than good living, therefore they go astray, and bear little or no fruit.