Ernst Haeckel

Evolution is not a theory, but a fact supported by evidence.

All life springs from the sea.

The tree of life is a genealogical tree.

Nature knows no leaps; all changes are gradual.

Monism teaches that mind and matter are one.

The artist in me sees the beauty in the microscope.

Death is but a return to the elements.

Science is the true religion of the modern world.

The human embryo reveals our animal ancestry.

Progress in evolution is not linear, but branching.

Imagination is the bridge between observation and theory.

The wonders of the deep sea mirror the mysteries of the mind.

Every organism is a poem written by nature.

Atheism is the logical outcome of scientific inquiry.

The fossil record is the autobiography of the earth.

Life's diversity is its greatest strength.

To understand man, study the jellyfish.

Philosophy without biology is empty; biology without philosophy is blind.

The gastraea theory explains the origin of multicellular life.

Nature's artistry surpasses that of any human hand.