Leonardo presents wisdom as something that develops from experience rather than from abstract thought alone. The phrase suggests that sound judgement is formed by observing, testing and reflecting on what happens in practice. Knowledge may begin with ideas or instruction, but experience gives those ideas context and exposes their limits.

The statement also reflects a broader distinction between possessing information and understanding how to use it. Experience can reveal patterns, consequences and practical difficulties that are not always visible in theory. In this sense, wisdom emerges through repeated contact with the world and through attention to the results of one’s actions.

The quote can therefore be applied to education, scientific enquiry and everyday decision-making. It does not dismiss study or reasoning, but places experience alongside them as an important source of understanding. Its central claim is that mature judgement is strengthened when knowledge is tested against reality.