Louis Agassiz

Doubt is the beginning of wisdom.

The harmony of nature is divine.

Fish scales tell tales of ancient seas.

Persistence in the face of ignorance yields truth.

The universe is a grand laboratory.

Ice ages come and go, but life endures.

Observation is the soil in which knowledge grows.

Nature's laws are impartial.

The microscope reveals worlds within worlds.

Joy in discovery is life's greatest reward.

Species are fixed, but their study evolves.

The heart of science is humility.

Mountains are the bones of the earth.

Friendship with nature enriches the spirit.

Truth emerges from the clash of ideas.

Birds teach us freedom.

The tide of knowledge rises slowly.

Legacy is in the minds we inspire.

Humor lightens the burden of inquiry.

The end of all exploration is to arrive where we began and know it for the first time.