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I certainly know that I owe it [the Copernican theory] this duty, that as I have attested it as true in my deepest soul, and as I contemplate its beauty with incredible and ravishing delight, I should also publicly defend it to my readers with all the force at my command.

— Johannes Kepler Joannis Kepleri Astronomi Opera Omnia (1858)

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More quotes by Johannes Kepler

Discover the force of the heavens O Men: Once recognised it can be put to use: No use could be seen in unknown things.

De fundamentis astrologiae certioribus (1601)

Truth is the daughter of time, and I feel no shame in being her midwife.

Geometry is one and eternal shining in the mind of God. That share in it accorded to humans is one of the reasons that humanity is the image of God.

Harmonices Mundi (1618)

God gives every animal the means of saving its life—why object if he gives astrology to the astronomer?

Joannis Kepleri Astronomi Opera Omnia (1858)

Given ships or sails adapted to the breezes of heaven, there will be those who will not shrink from even that vast expanse.

Dissertatio cum Nuncio Sidereo (1610)

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Quote text and notes from Wikiquote: Johannes Kepler (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.