The men of experiment are like the ant; they only collect and use. But the bee...gathers its materials from the flowers of the garden and of the field, but transforms and digests it by a power of its own.
He turns not back who is bound to a star.
Reprove your friend in secret and praise him openly.
I wish to work miracles.
Whoever does not respect life, does not deserve it.
Experience never misleads; what you are misled by is only your judgment, and this misleads you by anticipating results from experience of a kind that is not produced by your experiments.