At the heart of thermodynamics lies the second law, which forbids heat to flow spontaneously from cold to hot bodies, while allowing it to flow from hot to cold. This law is therefore not reversible: it imprints upon the universe an arrow of time, pointing the way of unidirectional change.

An eternal universe is incompatible with the continuing existence of irreversible physical processes.

Belief in a divine being who starts the universe off and then “sits back” to watch events unfold, taking no direct part in subsequent affairs, is known as “deism.” Here God’s nature is captured by the image of the perfect watchmaker, a sort of cosmic engineer, who designs and constructs a vast and elaborate mechanism and then sets it going.

Tidak ada kesalah-pahaman mengenai ilmuwan yang lebih besar daripada kepercayaan yang berkembang bahwa mereka adalah individu-individu yang dingin, keras, dan tak berjiwa.

Many investigators feel uneasy stating in public that the origin of life is a mystery, even though behind closed doors they admit they are baffled.