Knowledge is an unending adventure at the edge of uncertainty.

• Every animal leaves traces of what it was man alone leaves traces of what he created.
• Man is unique not because he does science, and his is unique not because he does art, but because science and art equally are expressions of his marvelous plasticity of mind.
• You will die but the carbon will not its career does not end with you. It will return to the soil, and there a plant may take it up again in time, sending it once more on a cycle of plant and animal life.
• We are all afraid for our confidence, for the future, for the world. That is the nature of the human imagination. Yet every man, every civilization, has gone forward because of its engagement with what it has set itself to do.
• We are all afraid for our confidence, for the future, for the world. That is the nature of the human imagination. Yet every man, every civilization, has gone forward because of its engagement with what it has set itself to do.
• Knowledge is an unending adventure at the edge of uncertainty.
• Man masters nature not by force but by understanding. This is why science has succeeded where magic failed: because it has looked for no spell to cast over nature.
• No science is immune to the infection of politics and the corruption of power.
• No science is immune to the infection of politics and the corruption of power.
• Man is unique not because he does science, and his is unique not because he does art, but because science and art equally are expressions of his marvelous plasticity of mind.