Thomas à Kempis. (b. 1379 or 1380, d. 1471). The Imitation of Christ.
The Harvard Classics. 1909–14.
Book I: Admonitions Profitable for the Spiritual Life
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2. But often some secret thought lurking within us, or even some outward circumstance, turneth us aside. Many are secretly seeking their own ends in what they do, yet know it not. They seem to live in good peace of mind so long as things go well with them, and according to their desires, but if their desires be frustrated and broken, immediately they are shaken and displeased. Diversity of feelings and opinions very often brings about dissensions between friends, between countrymen, between religious and godly men.
3. Established custom is not easily relinquished, and no man is very easily led to see with the eyes of another. If thou rest more upon thy own reason or experience than upon the power of Jesus Christ, thy light shall come slowly and hardly; for God willeth us to be perfectly subject unto Himself, and all our reason to be exalted by abundant love towards Him.