Carl Friedrich Gauss on courage

It is not knowledge, but the act of learning, not possession but the act of getting there, which grants the greatest enjoyment.

All the measurements in the world do not balance one theorem by which the science of eternal truths is actually advanced.

Courage is the first of human qualities because it is the quality which guarantees the others.

Aristotle384–322 BC

Cowards die many times before their deaths. The valiant never taste of death but once.

William Shakespeare1564–1616Julius Caesar (1599), Act II, scene ii.In context

Success is not final, failure is not fatal: it is the courage to continue that counts.