Kepler (astronomer); Kobler
foundation stone; cornerstone
to be blessed with; to be rich in; to abound in
before one knows; before one becomes aware of; unnoticed; unawares
electrodynamics; electromagnetism
to grapple with; to wrestle with; to engage in a bout; to tackle (e.g. a problem); to come to grips with; to work hard on
I'm afraid to say; I'm sorry to say; unfortunately
esophagus; gullet; esophageal
weakness; debility; breakdown; prostration
suitable time; good time; propriety; moderation
exit (from a stage); exeunt; leaving; exit
good performance; good work; great success
(period of) a year; during an era
supporting role (actor); minor role