Alexander von Humboldt

The true scientist is a child at heart, always curious, always questioning.

Nature does not hurry, yet everything is accomplished.

The earth is a living organism, and we are its cells.

To understand is to forgive.

The greatest wealth is health.

The only constant in life is change.

The mind is not a vessel to be filled, but a fire to be kindled.

The future belongs to those who believe in the beauty of their dreams.

The best way to predict the future is to create it.

The journey of a thousand miles begins with a single step.

I have been accused of being a polymath. I prefer to think of myself as merely curious.

One must be a little mad to be a great scientist.

The most interesting discoveries are often made when one is looking for something else entirely.

My greatest regret is that I have but one life to explore this magnificent world.

To truly understand a landscape, one must not only measure its peaks but also feel its soul.

The more I learn, the more I realize how much I have yet to learn. It's a delightful predicament.

Some people collect butterflies; I collect mountains and rivers.

The only thing more boundless than the universe is human curiosity.

I have often found more wisdom in the silence of the forest than in the clamor of the city.

To classify is to understand, but to connect is to truly know.