Science is exploration. The fundamental nature of exploration is that we don't know what's there. We can guess and hope and aim to find out certain things, but we have to expect surprises.

Just as the only reservoir for the typhus virus in nature is provided by man, so the only vector of infection is the louse. The bite of the louse is not virulent immediately after the infecting meal. It becomes so only towards the 7th day following infection.

A rare experience of a moment at daybreak, when something in nature seems to reveal all consciousness, cannot be explained at noon. Yet it is part of the day's unity.

Nature Quotes