We pass through this world but once. Few tragedies can be more extensive than the stunting of life, few injustices deeper than the denial of an opportunity to strive or even to hope, by a limit imposed from without, but falsely identified as lying within.
Extensive traveling induces a feeling of encapsulation, and travel, so broadening at first, contracts the mind.
The more extensive a man's knowledge of what has been done, the greater will be his power of knowing what to do.
Errors to be dangerous must have a great deal of truth mingled with them. It is only from this alliance that they can ever obtain an extensive circulation.
The most extensive computation known has been conducted over the last billion years on a planet-wide scale: it is the evolution of life. The power of this computation is illustrated by the complexity and beauty of its crowning achievement, the human brain.