“Untilled ground, however rich, will bring forth thistles and thorns; so also the mind of man.”
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Teresa of Ávila 55
Roman Catholic saint 1515–1582Related quotes

17th century proverb
Misattributed

“The wind is not helpless for any man's need,
Nor falleth the rain but for thistle and weed.”
Love is Enough (1872), Song II: Have No Thought for Tomorrow

The Lily
1790s, Songs of Experience (1794)

As A Man Thinketh (1902)
Variant: Mind is the Master Power that molds and makes, And we are mind. And ever more we take the tool of thought, and shaping what we will, bring forth a thousand joys, or a thousand ills. We think in secret, and it comes to pass, environment, is but our looking glass.

"The Rose" (published c. 1648). Compare: "Flower of all hue, and without thorn the rose", John Milton, Paradise Lost, book iv. line 256.; "Every rose has it's thorn", Poison, "Every Rose Has Its Thorn".
Hesperides (1648)

Ad Leptinum 162, as quoted in Dictionary of Quotations (Classical) (1897) by Thomas Benfield Harbottle, p. 511