Alexander von Humboldt

The earth is a living being, and we are its dreams.

The study of nature is the study of truth.

The world is a song, and we are its singers.

The contemplation of nature is a source of profound peace.

The more we understand, the more we appreciate.

The greatest discovery is the discovery of oneself.

The true philosopher is a scientist, and the true scientist is a philosopher.

Nature is a miracle, and every moment is a wonder.

The earth is a living being, and we are its spirit.

The study of nature is the study of life.

Nature is a web of life, and all living creatures are connected.

The most dangerous world view is the one that sees nature as a mere backdrop to human activity.

In this great chain of causes and effects, no single fact can be known if it is taken isolated from its relation to the rest of the universe.

The progress of botany is intimately connected with the progress of chemistry.

We cannot command nature except by obeying her.

The human mind is capable of exciting the most injurious and fatal errors, by extending a partial and imperfect resemblance which exists in some circumstances to all.

I have found in no literature written before our epoch such a wealth of observations on the structure and distribution of plants.

Nature must be experienced through feeling.

The diversity of the phenomena of nature is so great, and the treasures hidden in the heavens so rich, precisely in order that the human mind shall never be lacking in fresh nourishment.

True science does not consist in dogmas, but in the free and independent search for truth.